CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Sternocleidomastoid muscle - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"3639b9b3-c7d2-4836-a758-77705726fcbb","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Sternocleidomastoid_muscle","wgTitle":"Sternocleidomastoid muscle","wgCurRevisionId":1258124378,"wgRevisionId":1258124378,"wgArticleId":465415,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description is different from Wikidata","Commons category link is on Wikidata","Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918)","Muscles of the head and neck","Otorhinolaryngology","Human head and neck"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Sternocleidomastoid_muscle","wgRelevantArticleId":465415, "wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":10000,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q272830","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled": false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups", "ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.15"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/1/1a/Sternocleidomastoideus.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="1272"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/1/1a/Sternocleidomastoideus.png"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="848"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="678"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Sternocleidomastoid muscle - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Sternocleidomastoid_muscle"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Sternocleidomastoid_muscle"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Sternocleidomastoid_muscle rootpage-Sternocleidomastoid_muscle skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" title="Main menu" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Sternocleidomastoid+muscle" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Sternocleidomastoid+muscle" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Sternocleidomastoid+muscle" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Sternocleidomastoid+muscle" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Etymology_and_location" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Etymology_and_location"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Etymology and location</span> </div> </a> <ul id="toc-Etymology_and_location-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Structure" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Structure"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Structure</span> </div> </a> <button aria-controls="toc-Structure-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Structure subsection</span> </button> <ul id="toc-Structure-sublist" class="vector-toc-list"> <li id="toc-Nerve_supply" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nerve_supply"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Nerve supply</span> </div> </a> <ul id="toc-Nerve_supply-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Variation" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Variation"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Variation</span> </div> </a> <ul id="toc-Variation-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Function" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Function"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Function</span> </div> </a> <button aria-controls="toc-Function-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Function subsection</span> </button> <ul id="toc-Function-sublist" class="vector-toc-list"> <li id="toc-Contraction" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Contraction"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Contraction</span> </div> </a> <ul id="toc-Contraction-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Anatomical_landmark" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Anatomical_landmark"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Anatomical landmark</span> </div> </a> <ul id="toc-Anatomical_landmark-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Clinical_significance" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Clinical_significance"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Clinical significance</span> </div> </a> <ul id="toc-Clinical_significance-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Sternocleidomastoid muscle</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 33 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-33" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">33 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%B6%D9%84%D8%A9_%D9%82%D8%B5%D9%8A%D8%A9_%D8%AA%D8%B1%D9%82%D9%88%D9%8A%D8%A9_%D8%AD%D9%84%D9%85%D9%8A%D8%A9" title="عضلة قصية ترقوية حلمية – Arabic" lang="ar" hreflang="ar" data-title="عضلة قصية ترقوية حلمية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%93%D1%80%D1%8A%D0%B4%D0%BD%D0%BE%D0%BA%D0%BB%D1%8E%D1%87%D0%B8%D1%87%D0%BD%D0%BE%D1%81%D0%B8%D1%81%D0%BE%D0%B2%D0%B8%D0%B4%D0%B5%D0%BD_%D0%BC%D1%83%D1%81%D0%BA%D1%83%D0%BB" title="Гръдноключичносисовиден мускул – Bulgarian" lang="bg" hreflang="bg" data-title="Гръдноключичносисовиден мускул" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/M%C3%BAscul_esternoclidomastoidal" title="Múscul esternoclidomastoidal – Catalan" lang="ca" hreflang="ca" data-title="Múscul esternoclidomastoidal" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Zdviha%C4%8D_hlavy" title="Zdvihač hlavy – Czech" lang="cs" hreflang="cs" data-title="Zdvihač hlavy" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Musculus_sternocleidomastoideus" title="Musculus sternocleidomastoideus – German" lang="de" hreflang="de" data-title="Musculus sternocleidomastoideus" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A3%CF%84%CE%B5%CF%81%CE%BD%CE%BF%CE%BA%CE%BB%CE%B5%CE%B9%CE%B4%CE%BF%CE%BC%CE%B1%CF%83%CF%84%CE%BF%CE%B5%CE%B9%CE%B4%CE%AE%CF%82_%CE%BC%CF%85%CF%82" title="Στερνοκλειδομαστοειδής μυς – Greek" lang="el" hreflang="el" data-title="Στερνοκλειδομαστοειδής μυς" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/M%C3%BAsculo_esternocleidomastoideo" title="Músculo esternocleidomastoideo – Spanish" lang="es" hreflang="es" data-title="Músculo esternocleidomastoideo" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Sternoklaviomastoidea_muskolo" title="Sternoklaviomastoidea muskolo – Esperanto" lang="eo" hreflang="eo" data-title="Sternoklaviomastoidea muskolo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Esternokleidomastoideo" title="Esternokleidomastoideo – Basque" lang="eu" hreflang="eu" data-title="Esternokleidomastoideo" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%A7%D9%87%DB%8C%DA%86%D9%87_%D8%AC%D9%86%D8%A7%D8%BA%DB%8C%E2%80%8C%D9%BE%D8%B3%D8%AA%D8%A7%D9%86%DA%A9%DB%8C" title="ماهیچه جناغی‌پستانکی – Persian" lang="fa" hreflang="fa" data-title="ماهیچه جناغی‌پستانکی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Muscle_sterno-cl%C3%A9ido-masto%C3%AFdien" title="Muscle sterno-cléido-mastoïdien – French" lang="fr" hreflang="fr" data-title="Muscle sterno-cléido-mastoïdien" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/M%C3%BAsculo_esternocleidomastoideo" title="Músculo esternocleidomastoideo – Galician" lang="gl" hreflang="gl" data-title="Músculo esternocleidomastoideo" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%AA%A9%EB%B9%97%EA%B7%BC" title="목빗근 – Korean" lang="ko" hreflang="ko" data-title="목빗근" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BF%D6%80%D5%AE%D5%B8%D5%BD%D5%AF%D6%80%D5%A1%D5%A1%D5%B6%D6%80%D5%A1%D5%AF%D5%A1%D5%BA%D5%BF%D5%AF%D5%A1%D5%B1%D6%87_%D5%B4%D5%AF%D5%A1%D5%B6" title="Կրծոսկրաանրակապտկաձև մկան – Armenian" lang="hy" hreflang="hy" data-title="Կրծոսկրաանրակապտկաձև մկան" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Prsnoklju%C4%8Dnosisasti_mi%C5%A1i%C4%87" title="Prsnoključnosisasti mišić – Croatian" lang="hr" hreflang="hr" data-title="Prsnoključnosisasti mišić" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Otot_sternokleidomastoid" title="Otot sternokleidomastoid – Indonesian" lang="id" hreflang="id" data-title="Otot sternokleidomastoid" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Muscolo_sternocleidomastoideo" title="Muscolo sternocleidomastoideo – Italian" lang="it" hreflang="it" data-title="Muscolo sternocleidomastoideo" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Musculus_sternocleidomastoidicus" title="Musculus sternocleidomastoidicus – Latin" lang="la" hreflang="la" data-title="Musculus sternocleidomastoidicus" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Fejbiccent%C5%91_izom" title="Fejbiccentő izom – Hungarian" lang="hu" hreflang="hu" data-title="Fejbiccentő izom" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Musculus_sternocleidomastoideus" title="Musculus sternocleidomastoideus – Dutch" lang="nl" hreflang="nl" data-title="Musculus sternocleidomastoideus" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E8%83%B8%E9%8E%96%E4%B9%B3%E7%AA%81%E7%AD%8B" title="胸鎖乳突筋 – Japanese" lang="ja" hreflang="ja" data-title="胸鎖乳突筋" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mi%C4%99sie%C5%84_mostkowo-obojczykowo-sutkowy" title="Mięsień mostkowo-obojczykowo-sutkowy – Polish" lang="pl" hreflang="pl" data-title="Mięsień mostkowo-obojczykowo-sutkowy" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/M%C3%BAsculo_esternocleidomastoideo" title="Músculo esternocleidomastoideo – Portuguese" lang="pt" hreflang="pt" data-title="Músculo esternocleidomastoideo" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Mu%C8%99chiul_sternocleidomastoidian" title="Mușchiul sternocleidomastoidian – Romanian" lang="ro" hreflang="ro" data-title="Mușchiul sternocleidomastoidian" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%93%D1%80%D1%83%D0%B4%D0%B8%D0%BD%D0%BE-%D0%BA%D0%BB%D1%8E%D1%87%D0%B8%D1%87%D0%BD%D0%BE-%D1%81%D0%BE%D1%81%D1%86%D0%B5%D0%B2%D0%B8%D0%B4%D0%BD%D0%B0%D1%8F_%D0%BC%D1%8B%D1%88%D1%86%D0%B0" title="Грудино-ключично-сосцевидная мышца – Russian" lang="ru" hreflang="ru" data-title="Грудино-ключично-сосцевидная мышца" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Obra%C4%8Dalka_glave" title="Obračalka glave – Slovenian" lang="sl" hreflang="sl" data-title="Obračalka glave" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D1%82%D0%B5%D1%80%D0%BD%D0%BE%D0%BA%D0%BB%D0%B5%D0%B8%D0%B4%D0%BE%D0%BC%D0%B0%D1%81%D1%82%D0%BE%D0%B8%D0%B4%D0%BD%D0%B8_%D0%BC%D0%B8%D1%88%D0%B8%D1%9B" title="Стерноклеидомастоидни мишић – Serbian" lang="sr" hreflang="sr" data-title="Стерноклеидомастоидни мишић" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Sternokleidomastoidni_mi%C5%A1i%C4%87" title="Sternokleidomastoidni mišić – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Sternokleidomastoidni mišić" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/P%C3%A4%C3%A4nny%C3%B6kk%C3%A4%C3%A4j%C3%A4lihas" title="Päännyökkääjälihas – Finnish" lang="fi" hreflang="fi" data-title="Päännyökkääjälihas" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Sternocleidomastoideus" title="Sternocleidomastoideus – Swedish" lang="sv" hreflang="sv" data-title="Sternocleidomastoideus" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%81%E0%B8%A5%E0%B9%89%E0%B8%B2%E0%B8%A1%E0%B9%80%E0%B8%99%E0%B8%B7%E0%B9%89%E0%B8%AD%E0%B8%AA%E0%B9%80%E0%B8%95%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B9%82%E0%B8%99%E0%B9%84%E0%B8%84%E0%B8%A5%E0%B9%82%E0%B8%94%E0%B8%A1%E0%B8%B2%E0%B8%AA%E0%B8%95%E0%B8%AD%E0%B8%A2%E0%B8%94%E0%B9%8C" title="กล้ามเนื้อสเตอร์โนไคลโดมาสตอยด์ – Thai" lang="th" hreflang="th" data-title="กล้ามเนื้อสเตอร์โนไคลโดมาสตอยด์" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D1%80%D1%83%D0%B4%D0%BD%D0%B8%D0%BD%D0%BD%D0%BE-%D0%BA%D0%BB%D1%8E%D1%87%D0%B8%D1%87%D0%BD%D0%BE-%D1%81%D0%BE%D1%81%D0%BA%D0%BE%D0%BF%D0%BE%D0%B4%D1%96%D0%B1%D0%BD%D0%B8%D0%B9_%D0%BC%27%D1%8F%D0%B7" title="Груднинно-ключично-соскоподібний м'яз – Ukrainian" lang="uk" hreflang="uk" data-title="Груднинно-ключично-соскоподібний м'яз" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%83%B8%E9%8E%96%E4%B9%B3%E7%AA%81%E8%82%8C" title="胸鎖乳突肌 – Chinese" lang="zh" hreflang="zh" data-title="胸鎖乳突肌" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q272830#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Sternocleidomastoid_muscle" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Sternocleidomastoid_muscle" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Sternocleidomastoid_muscle"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Sternocleidomastoid_muscle"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Sternocleidomastoid_muscle" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Sternocleidomastoid_muscle" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&oldid=1258124378" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Sternocleidomastoid_muscle&id=1258124378&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FSternocleidomastoid_muscle"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FSternocleidomastoid_muscle"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Sternocleidomastoid_muscle&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Sternocleidomastoid_muscle&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Sternocleidomastoid_muscles" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q272830" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Cervical muscle</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="background-color:antiquewhite">Sternocleidomastoid</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Sternocleidomastoideus.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Sternocleidomastoideus.png/250px-Sternocleidomastoideus.png" decoding="async" width="250" height="265" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Sternocleidomastoideus.png/375px-Sternocleidomastoideus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Sternocleidomastoideus.png/500px-Sternocleidomastoideus.png 2x" data-file-width="536" data-file-height="568" /></a></span><div class="infobox-caption"><a href="/wiki/Neck" title="Neck">Neck</a> muscles, with the sternocleidomastoid in bright red</div></td></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Woman_in_white_top_looking_to_her_left_22March2009.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Woman_in_white_top_looking_to_her_left_22March2009.jpg/250px-Woman_in_white_top_looking_to_her_left_22March2009.jpg" decoding="async" width="250" height="375" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Woman_in_white_top_looking_to_her_left_22March2009.jpg/375px-Woman_in_white_top_looking_to_her_left_22March2009.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/Woman_in_white_top_looking_to_her_left_22March2009.jpg/500px-Woman_in_white_top_looking_to_her_left_22March2009.jpg 2x" data-file-width="1939" data-file-height="2910" /></a></span><div class="infobox-caption">The sternocleidomastoid (right muscle shown) can be clearly observed when rotating the head.</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Details</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em">Pronunciation</th><td class="infobox-data">(<span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˌ/: secondary stress follows">ˌ</span><span title="'s' in 'sigh'">s</span><span title="'t' in 'tie'">t</span><span title="/ɜːr/: 'ur' in 'fur'">ɜːr</span><span title="'n' in 'nigh'">n</span><span title="/oʊ/: 'o' in 'code'">oʊ</span><span title="/ˌ/: secondary stress follows">ˌ</span><span title="'k' in 'kind'">k</span><span title="'l' in 'lie'">l</span><span title="/aɪ/: 'i' in 'tide'">aɪ</span><span title="'d' in 'dye'">d</span><span title="/ə/: 'a' in 'about'">ə</span><span title="/ˈ/: primary stress follows">ˈ</span><span title="'m' in 'my'">m</span><span title="/æ/: 'a' in 'bad'">æ</span><span title="'s' in 'sigh'">s</span><span title="/ˌ/: secondary stress follows">ˌ</span><span title="'t' in 'tie'">t</span><span title="/ɔɪ/: 'oi' in 'choice'">ɔɪ</span><span title="'d' in 'dye'">d</span></span>,<span class="wrap"> </span>-<span style="border-bottom:1px dotted"><span title="'n' in 'nigh'">n</span><span title="/ə/: 'a' in 'about'">ə</span></span>-,<span class="wrap"> </span>-<span style="border-bottom:1px dotted"><span title="'d' in 'dye'">d</span><span title="/oʊ/: 'o' in 'code'">oʊ</span></span>-/</a></span></span><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>)</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Anatomical_terms_of_muscle#Insertion_and_origin" title="Anatomical terms of muscle">Origin</a></th><td class="infobox-data"><a href="/wiki/Manubrium_sterni" class="mw-redirect" title="Manubrium sterni">Manubrium</a> and <a href="/wiki/Medial_(anatomy)" class="mw-redirect" title="Medial (anatomy)">medial</a> portion of the <a href="/wiki/Clavicle" title="Clavicle">clavicle</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Anatomical_terms_of_muscle#Insertion_and_origin" title="Anatomical terms of muscle">Insertion</a></th><td class="infobox-data"><a href="/wiki/Mastoid_process_of_the_temporal_bone" class="mw-redirect" title="Mastoid process of the temporal bone">Mastoid process of the temporal bone</a>, <a href="/wiki/Superior_nuchal_line" class="mw-redirect" title="Superior nuchal line">superior nuchal line</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Artery" title="Artery">Artery</a></th><td class="infobox-data"><a href="/wiki/Occipital_artery" title="Occipital artery">Occipital artery</a> and the <a href="/wiki/Superior_thyroid_artery" title="Superior thyroid artery">superior thyroid artery</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Nerve" title="Nerve">Nerve</a></th><td class="infobox-data">Motor: <a href="/wiki/Spinal_accessory_nerve" class="mw-redirect" title="Spinal accessory nerve">spinal accessory nerve</a><br />sensory: <a href="/wiki/Cervical_plexus" title="Cervical plexus">cervical plexus</a><br /> Proprioceptive: <a href="/w/index.php?title=Ventral_rami_of_C2-3&action=edit&redlink=1" class="new" title="Ventral rami of C2-3 (page does not exist)">ventral rami of C2-3</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Anatomical_terms_of_motion" title="Anatomical terms of motion">Actions</a></th><td class="infobox-data">Unilaterally: contralateral cervical rotation, ipsilateral cervical flexion Bilaterally: cervical flexion, elevation of sternum and assists in forced inhalation.</td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Identifiers</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Latin" title="Latin">Latin</a></th><td class="infobox-data"><i>musculus sternocleidomastoideus</i></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Terminologia_Anatomica" title="Terminologia Anatomica">TA98</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://ifaa.unifr.ch/Public/EntryPage/TA98%20Tree/Entity%20TA98%20EN/04.2.01.008%20Entity%20TA98%20EN.htm">A04.2.01.008</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Terminologia_Anatomica" title="Terminologia Anatomica">TA2</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://ta2viewer.openanatomy.org/?id=2156">2156</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Foundational_Model_of_Anatomy" title="Foundational Model of Anatomy">FMA</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://bioportal.bioontology.org/ontologies/FMA/?p=classes&conceptid=http%3A%2F%2Fpurl.org%2Fsig%2Font%2Ffma%2Ffma13407">13407</a></td></tr><tr><td colspan="2" class="infobox-below"><a href="/wiki/Anatomical_terms_of_muscle" title="Anatomical terms of muscle">Anatomical terms of muscle</a><div style="text-align: right;"><small class="noprint">[<a href="https://www.wikidata.org/wiki/Q272830" class="extiw" title="d:Q272830">edit on Wikidata</a>]</small></div></td></tr></tbody></table> <p>The <b>sternocleidomastoid muscle</b> is one of the largest and most superficial cervical muscles. The primary actions of the muscle are rotation of the head to the opposite side and <a href="/wiki/Anatomical_terms_of_motion#Flexion_and_extension" title="Anatomical terms of motion">flexion</a> of the neck.<sup id="cite_ref-ejk_3-0" class="reference"><a href="#cite_note-ejk-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The sternocleidomastoid is innervated by the <a href="/wiki/Accessory_nerve" title="Accessory nerve">accessory nerve</a>.<sup id="cite_ref-ejk_3-1" class="reference"><a href="#cite_note-ejk-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Etymology_and_location">Etymology and location</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=1" title="Edit section: Etymology and location"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>It is given the name <i>sternocleidomastoid</i> because it originates at the <a href="/wiki/Manubrium" class="mw-redirect" title="Manubrium">manubrium</a> of the <a href="/wiki/Human_sternum" class="mw-redirect" title="Human sternum">sternum</a> (<i>sterno-</i>) and the <a href="/wiki/Clavicle" title="Clavicle">clavicle</a> (<i>cleido-</i>) and has an <a href="/wiki/Insertion_(anatomy)" class="mw-redirect" title="Insertion (anatomy)">insertion</a> at the <a href="/wiki/Mastoid_process" class="mw-redirect" title="Mastoid process">mastoid process</a> of the <a href="/wiki/Temporal_bone" title="Temporal bone">temporal bone</a> of the <a href="/wiki/Human_skull" class="mw-redirect" title="Human skull">skull</a>.<sup id="cite_ref-:1_4-0" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=2" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The sternocleidomastoid muscle originates from two locations: the <a href="/wiki/Manubrium" class="mw-redirect" title="Manubrium">manubrium</a> of the <a href="/wiki/Human_sternum" class="mw-redirect" title="Human sternum">sternum</a> and the <a href="/wiki/Clavicle" title="Clavicle">clavicle</a>.<sup id="cite_ref-:1_4-1" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> It travels obliquely across the side of the neck and inserts at the <a href="/wiki/Mastoid_process" class="mw-redirect" title="Mastoid process">mastoid process</a> of the <a href="/wiki/Temporal_bone" title="Temporal bone">temporal bone</a> of the <a href="/wiki/Human_skull" class="mw-redirect" title="Human skull">skull</a> by a thin <a href="/wiki/Aponeurosis" title="Aponeurosis">aponeurosis</a>.<sup id="cite_ref-:1_4-2" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The sternocleidomastoid is thick and narrow at its center, and broader and thinner at either end. </p><p>The sternal head is a round <a href="/wiki/Muscle_fascicle" title="Muscle fascicle">fasciculus</a>, tendinous in front, fleshy behind, arising from the upper part of the front of the <a href="/wiki/Manubrium_sterni" class="mw-redirect" title="Manubrium sterni">manubrium sterni</a>. It travels superiorly, laterally, and posteriorly. </p><p>The clavicular head is composed of fleshy and <a href="/wiki/Aponeurotic" class="mw-redirect" title="Aponeurotic">aponeurotic</a> fibers, arises from the upper, frontal surface of the medial third of the <a href="/wiki/Clavicle" title="Clavicle">clavicle</a>; it is directed almost vertically upward. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sternocleidomastoid.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Sternocleidomastoid.png/220px-Sternocleidomastoid.png" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Sternocleidomastoid.png/330px-Sternocleidomastoid.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Sternocleidomastoid.png/440px-Sternocleidomastoid.png 2x" data-file-width="1920" data-file-height="1080" /></a><figcaption>Sternocleidomastoid labelled</figcaption></figure> <p>The two heads are separated from one another at their origins by a triangular interval (<i>lesser supraclavicular fossa</i>) but gradually blend, below the middle of the neck, into a thick, rounded muscle which is inserted, by a strong tendon, into the lateral surface of the <a href="/wiki/Mastoid_process" class="mw-redirect" title="Mastoid process">mastoid process</a>, from its apex to its superior border, and by a thin <a href="/wiki/Aponeurosis" title="Aponeurosis">aponeurosis</a> into the lateral half of the <a href="/wiki/Superior_nuchal_line" class="mw-redirect" title="Superior nuchal line">superior nuchal line</a> of the <a href="/wiki/Occipital_bone" title="Occipital bone">occipital bone</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Nerve_supply">Nerve supply</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=3" title="Edit section: Nerve supply"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The sternocleidomastoid is innervated by <a href="/wiki/Accessory_nerve" title="Accessory nerve">accessory nerve</a> of the same side.<sup id="cite_ref-:2_6-0" class="reference"><a href="#cite_note-:2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> It supplies only motor fibres. The cervical plexus supplies sensation, including <a href="/wiki/Proprioception" title="Proprioception">proprioception</a>, from the <a href="/wiki/Ventral_ramus" class="mw-redirect" title="Ventral ramus">ventral primary rami</a> of <a href="/wiki/Cervical_spinal_nerve_2" title="Cervical spinal nerve 2">C2</a> and <a href="/wiki/Cervical_spinal_nerve_3" title="Cervical spinal nerve 3">C3</a>.<sup id="cite_ref-:2_6-1" class="reference"><a href="#cite_note-:2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Variation">Variation</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=4" title="Edit section: Variation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The clavicular origin of the sternocleidomastoid varies greatly: in some cases the clavicular head may be as narrow as the sternal; in others it may be as much as 7.5 millimetres (0.30 in) in breadth. </p><p>When the clavicular origin is broad, it is occasionally subdivided into several slips, separated by narrow intervals. More rarely, the adjoining margins of the sternocleidomastoid and <a href="/wiki/Trapezius" title="Trapezius">trapezius</a> are in contact. This would leave no <a href="/wiki/Posterior_triangle" class="mw-redirect" title="Posterior triangle">posterior triangle</a>. </p><p>The <b>supraclavicularis muscle</b> arises from the manubrium behind the sternocleidomastoid and passes behind the sternocleidomastoid to the upper surface of the clavicle. </p> <div class="mw-heading mw-heading2"><h2 id="Function">Function</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=5" title="Edit section: Function"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The function of this muscle is to rotate the head to the opposite side or obliquely rotate the head.<sup id="cite_ref-:1_4-3" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> It also flexes the neck.<sup id="cite_ref-:1_4-4" class="reference"><a href="#cite_note-:1-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> When both sides of the muscle act together, it <a href="/wiki/Anatomical_terms_of_motion" title="Anatomical terms of motion">flexes</a> the neck and extends the head. When one side acts alone, it causes the head to rotate to the opposite side and flexes laterally to the same side (ipsilaterally). </p><p>It also acts as an <a href="/wiki/Muscles_of_respiration#Accessory_muscles_of_respiration" title="Muscles of respiration">accessory muscle of respiration</a>, along with the <a href="/wiki/Scalene_muscles" title="Scalene muscles">scalene muscles</a> of the neck. </p> <div class="mw-heading mw-heading3"><h3 id="Contraction">Contraction</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=6" title="Edit section: Contraction"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The signaling process to contract or relax the sternocleidomastoid begins in Cranial Nerve XI, the <a href="/wiki/Accessory_nerve" title="Accessory nerve">accessory nerve</a>. The accessory nerve nucleus is in the <a href="/wiki/Anterior_grey_column" class="mw-redirect" title="Anterior grey column">anterior horn of the spinal cord</a> around C1-C3, where lower motor neuron fibers mark its origin. The fibers from the accessory nerve nucleus travel upward to enter the cranium via the foramen magnum. The internal carotid artery to reach both the sternocleidomastoid muscles and the <a href="/wiki/Trapezius" title="Trapezius">trapezius</a>. After a signal reaches the accessory nerve nucleus in the anterior horn of the spinal cord, the signal is conveyed to <a href="/wiki/Motor_endplate" class="mw-redirect" title="Motor endplate">motor endplates</a> on the muscle fibers located at the clavicle. <a href="/wiki/Acetylcholine" title="Acetylcholine">Acetylcholine</a> (ACH) is released from vesicles and is sent over the synaptic cleft to receptors on the postsynaptic bulb. The ACH causes the resting potential to increase above -55mV, thus initiating an action potential which travels along the muscle fiber. Along the muscle fibers are t-tubule openings which facilitate the spread of the action potential into the muscle fibers. The t-tubule meets with the <a href="/wiki/Sarcoplasmic_reticulum" title="Sarcoplasmic reticulum">sarcoplasmic reticulum</a> at locations throughout the muscle fiber, at these locations the sarcoplasmic reticulum releases calcium ions that results in the movement of <a href="/wiki/Troponin" title="Troponin">troponin</a> and <a href="/wiki/Tropomyosin" title="Tropomyosin">tropomyosin</a> on thin filaments. The movement of troponin and tropomyosin is key in facilitating the myosin head to move along the thin filament, resulting in a contraction of the sternocleidomastoid muscle.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Anatomical_landmark">Anatomical landmark</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=7" title="Edit section: Anatomical landmark"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Gray512.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/Gray512.png/220px-Gray512.png" decoding="async" width="220" height="191" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/Gray512.png/330px-Gray512.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/61/Gray512.png/440px-Gray512.png 2x" data-file-width="500" data-file-height="433" /></a><figcaption>The sternocleidomastoid muscle with nearby structures labeled, such as the <a href="/wiki/Triangles_of_the_neck" title="Triangles of the neck">triangles of the neck</a>.</figcaption></figure> <p>The sternocleidomastoid is within the <a href="/wiki/Investing_fascia" class="mw-redirect" title="Investing fascia">investing fascia</a> of the neck, along with the <a href="/wiki/Trapezius_muscle" class="mw-redirect" title="Trapezius muscle">trapezius muscle</a>, with which it shares its nerve supply (the <a href="/wiki/Accessory_nerve" title="Accessory nerve">accessory nerve</a>). It is thick and thus serves as a primary <a href="/wiki/Anatomical_landmark" class="mw-redirect" title="Anatomical landmark">landmark</a> of the neck, as it divides the neck into anterior and posterior cervical triangles (in front and behind the muscle, respectively) which helps define the location of structures, such as the lymph nodes for the head and neck.<sup id="cite_ref-:0_9-0" class="reference"><a href="#cite_note-:0-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>Many important structures relate to the sternocleidomastoid, including the <a href="/wiki/Common_carotid_artery" title="Common carotid artery">common carotid artery</a>, accessory nerve, and <a href="/wiki/Brachial_plexus" title="Brachial plexus">brachial plexus</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Clinical_significance">Clinical significance</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=8" title="Edit section: Clinical significance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Examination of the sternocleidomastoid muscle forms part of the <a href="/wiki/Cranial_nerve_examination" title="Cranial nerve examination">examination of the cranial nerves</a>. It can be felt on each side of the neck when a person moves their head to the opposite side.<sup id="cite_ref-:0_9-1" class="reference"><a href="#cite_note-:0-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>The triangle formed by the clavicle and the sternal and clavicular heads of the sternocleidomastoid muscle is used as a landmark in identifying the correct location for <a href="/wiki/Central_venous_catheter" title="Central venous catheter">central venous catheterization</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>Contraction of the muscle gives rise to a condition called <a href="/wiki/Torticollis" title="Torticollis">torticollis</a> or <i>wry neck</i>, and this can have a number of causes. Torticollis gives the appearance of a tilted head on the side involved. Treatment involves physiotherapy exercises to stretch the involved muscle and strengthen the muscle on the opposite side of the neck. <a href="/wiki/Torticollis#Congenital_muscular_torticollis" title="Torticollis">Congenital torticollis</a> can have an unknown cause or result from <a href="/wiki/Birth_trauma_(physical)" title="Birth trauma (physical)">birth trauma</a> that gives rise to a mass or tumor that can be palpated within the muscle. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sternocleidomastoid_muscle&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Sternocleidomastoid_muscles" class="extiw" title="commons:Category:Sternocleidomastoid muscles">Sternocleidomastoid muscles</a></span>.</div></div> </div> <p><span class="noviewer" typeof="mw:File"><span><img alt="Public domain" src="//upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/12px-PD-icon.svg.png" decoding="async" width="12" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/18px-PD-icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/24px-PD-icon.svg.png 2x" data-file-width="196" data-file-height="196" /></span></span> <i>This article incorporates text in the <a href="/wiki/Public_domain" title="Public domain">public domain</a> from <a rel="nofollow" class="external text" href="https://archive.org/stream/anatomyofhumanbo1918gray#page/390/mode/2up">page 390</a> of the 20th edition of</i> <a href="/wiki/Gray%27s_Anatomy" title="Gray's Anatomy">Gray's Anatomy</a> <i>(1918)</i> </p> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.merriam-webster.com/dictionary/Sternocleidomastoid">"Sternocleidomastoid"</a>. <i><a href="/wiki/Merriam-Webster" title="Merriam-Webster">Merriam-Webster.com Dictionary</a></i>. Merriam-Webster<span class="reference-accessdate">. Retrieved <span class="nowrap">2016-01-21</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Merriam-Webster.com+Dictionary&rft.atitle=Sternocleidomastoid&rft_id=https%3A%2F%2Fwww.merriam-webster.com%2Fdictionary%2FSternocleidomastoid&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20200322182726/https://www.lexico.com/definition/sternocleidomastoid">"Sternocleidomastoid"</a>. <i><a href="/wiki/Lexico" title="Lexico">Lexico</a> UK English Dictionary</i>. <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>. Archived from <a rel="nofollow" class="external text" href="http://www.lexico.com/definition/Sternocleidomastoid">the original</a> on 2020-03-22.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Sternocleidomastoid&rft.btitle=Lexico+UK+English+Dictionary&rft.pub=Oxford+University+Press&rft_id=http%3A%2F%2Fwww.lexico.com%2Fdefinition%2FSternocleidomastoid&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span> </span> </li> <li id="cite_note-ejk-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-ejk_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ejk_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKohanWirth2014" class="citation journal cs1">Kohan, Emil J.; Wirth, Garrett A. (2014). <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/24295343/">"Anatomy of the neck"</a>. <i>Clinics in Plastic Surgery</i>. <b>41</b> (1): <span class="nowrap">1–</span>6. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.cps.2013.09.016">10.1016/j.cps.2013.09.016</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1558-0504">1558-0504</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/24295343">24295343</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Clinics+in+Plastic+Surgery&rft.atitle=Anatomy+of+the+neck&rft.volume=41&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E1-%3C%2Fspan%3E6&rft.date=2014&rft.issn=1558-0504&rft_id=info%3Apmid%2F24295343&rft_id=info%3Adoi%2F10.1016%2Fj.cps.2013.09.016&rft.aulast=Kohan&rft.aufirst=Emil+J.&rft.au=Wirth%2C+Garrett+A.&rft_id=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F24295343%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-:1-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-:1_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:1_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:1_4-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-:1_4-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-:1_4-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRobinsonAnderson2005" class="citation cs2">Robinson, June K; Anderson, E Ratcliffe (2005-01-01), Robinson, June K; Sengelmann, Roberta D; Hanke, C William; Siegel, Daniel Mark (eds.), <a rel="nofollow" class="external text" href="http://www.sciencedirect.com/science/article/pii/B9780323027526500067">"1. Skin Structure and Surgical Anatomy"</a>, <i>Surgery of the Skin</i>, Edinburgh: Mosby, pp. <span class="nowrap">3–</span>23, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fb978-0-323-02752-6.50006-7">10.1016/b978-0-323-02752-6.50006-7</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-323-02752-6" title="Special:BookSources/978-0-323-02752-6"><bdi>978-0-323-02752-6</bdi></a><span class="reference-accessdate">, retrieved <span class="nowrap">2020-11-06</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Surgery+of+the+Skin&rft.atitle=1.+Skin+Structure+and+Surgical+Anatomy&rft.pages=%3Cspan+class%3D%22nowrap%22%3E3-%3C%2Fspan%3E23&rft.date=2005-01-01&rft_id=info%3Adoi%2F10.1016%2Fb978-0-323-02752-6.50006-7&rft.isbn=978-0-323-02752-6&rft.aulast=Robinson&rft.aufirst=June+K&rft.au=Anderson%2C+E+Ratcliffe&rft_id=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FB9780323027526500067&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGrayGrimsby2012" class="citation cs2">Gray, John C.; Grimsby, Ola (2012-01-01), Donatelli, Robert A. (ed.), <a rel="nofollow" class="external text" href="http://www.sciencedirect.com/science/article/pii/B9781437707403000052">"5. Interrelationship of the Spine, Rib Cage, and Shoulder"</a>, <i>Physical Therapy of the Shoulder</i> (5th ed.), Saint Louis: Churchill Livingstone, pp. <span class="nowrap">87–</span>130, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fb978-1-4377-0740-3.00005-2">10.1016/b978-1-4377-0740-3.00005-2</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4377-0740-3" title="Special:BookSources/978-1-4377-0740-3"><bdi>978-1-4377-0740-3</bdi></a><span class="reference-accessdate">, retrieved <span class="nowrap">2020-11-20</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physical+Therapy+of+the+Shoulder&rft.atitle=5.+Interrelationship+of+the+Spine%2C+Rib+Cage%2C+and+Shoulder&rft.pages=%3Cspan+class%3D%22nowrap%22%3E87-%3C%2Fspan%3E130&rft.date=2012-01-01&rft_id=info%3Adoi%2F10.1016%2Fb978-1-4377-0740-3.00005-2&rft.isbn=978-1-4377-0740-3&rft.aulast=Gray&rft.aufirst=John+C.&rft.au=Grimsby%2C+Ola&rft_id=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FB9781437707403000052&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-:2-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-:2_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:2_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTaira2015" class="citation cs2">Taira, Takaomi (2015-01-01), Tubbs, R. Shane; Rizk, Elias; Shoja, Mohammadali M.; Loukas, Marios (eds.), <a rel="nofollow" class="external text" href="http://www.sciencedirect.com/science/article/pii/B9780128026533000774">"28. Peripheral Nerve Surgical Procedures for Cervical Dystonia"</a>, <i>Nerves and Nerve Injuries</i>, San Diego: Academic Press, pp. <span class="nowrap">413–</span>430, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fb978-0-12-802653-3.00077-4">10.1016/b978-0-12-802653-3.00077-4</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-802653-3" title="Special:BookSources/978-0-12-802653-3"><bdi>978-0-12-802653-3</bdi></a><span class="reference-accessdate">, retrieved <span class="nowrap">2020-11-06</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nerves+and+Nerve+Injuries&rft.atitle=28.+Peripheral+Nerve+Surgical+Procedures+for+Cervical+Dystonia&rft.pages=%3Cspan+class%3D%22nowrap%22%3E413-%3C%2Fspan%3E430&rft.date=2015-01-01&rft_id=info%3Adoi%2F10.1016%2Fb978-0-12-802653-3.00077-4&rft.isbn=978-0-12-802653-3&rft.aulast=Taira&rft.aufirst=Takaomi&rft_id=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FB9780128026533000774&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSalyer2007" class="citation cs2">Salyer, Steven W. (2007-01-01), Salyer, Steven W. (ed.), <a rel="nofollow" class="external text" href="http://www.sciencedirect.com/science/article/pii/B9781416029717100091">"9. Neurological Emergencies"</a>, <i>Essential Emergency Medicine</i>, Philadelphia: W.B. Saunders, pp. <span class="nowrap">418–</span>496, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fb978-141602971-7.10009-1">10.1016/b978-141602971-7.10009-1</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4160-2971-7" title="Special:BookSources/978-1-4160-2971-7"><bdi>978-1-4160-2971-7</bdi></a><span class="reference-accessdate">, retrieved <span class="nowrap">2020-11-06</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Essential+Emergency+Medicine&rft.atitle=9.+Neurological+Emergencies&rft.pages=%3Cspan+class%3D%22nowrap%22%3E418-%3C%2Fspan%3E496&rft.date=2007-01-01&rft_id=info%3Adoi%2F10.1016%2Fb978-141602971-7.10009-1&rft.isbn=978-1-4160-2971-7&rft.aulast=Salyer&rft.aufirst=Steven+W.&rft_id=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FB9781416029717100091&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWalker1990" class="citation book cs1">Walker HK (1990). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK387/">"64 Cranial Nerve XI: The Spinal Accessory Nerve"</a>. In Walker HK, Hall WD, Hurst JW (eds.). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK201/"><i>Clinical Methods: The History, Physical, and Laboratory Examinations</i></a> (3rd ed.). Butterworths. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-409-90077-X" title="Special:BookSources/0-409-90077-X"><bdi>0-409-90077-X</bdi></a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/21250228">21250228</a>. NBK387.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=64+Cranial+Nerve+XI%3A+The+Spinal+Accessory+Nerve&rft.btitle=Clinical+Methods%3A+The+History%2C+Physical%2C+and+Laboratory+Examinations&rft.edition=3rd&rft.pub=Butterworths&rft.date=1990&rft_id=info%3Apmid%2F21250228&rft.isbn=0-409-90077-X&rft.aulast=Walker&rft.aufirst=HK&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fbooks%2FNBK387%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-:0-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFehrenbachHerring2012" class="citation book cs1">Fehrenbach, Margaret J.; Herring, Susan W. (2012). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Cl-PZwEACAAJ"><i>Illustrated Anatomy of the Head and Neck</i></a>. Elsevier. p. 87. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4377-2419-6" title="Special:BookSources/978-1-4377-2419-6"><bdi>978-1-4377-2419-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Illustrated+Anatomy+of+the+Head+and+Neck&rft.pages=87&rft.pub=Elsevier&rft.date=2012&rft.isbn=978-1-4377-2419-6&rft.aulast=Fehrenbach&rft.aufirst=Margaret+J.&rft.au=Herring%2C+Susan+W.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DCl-PZwEACAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDenysUretsky1991" class="citation journal cs1">Denys, B. G.; Uretsky, B. F. (December 1991). <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/1959371/">"Anatomical variations of internal jugular vein location: impact on central venous access"</a>. <i>Critical Care Medicine</i>. <b>19</b> (12): <span class="nowrap">1516–</span>1519. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1097%2F00003246-199112000-00013">10.1097/00003246-199112000-00013</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0090-3493">0090-3493</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/1959371">1959371</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Critical+Care+Medicine&rft.atitle=Anatomical+variations+of+internal+jugular+vein+location%3A+impact+on+central+venous+access&rft.volume=19&rft.issue=12&rft.pages=%3Cspan+class%3D%22nowrap%22%3E1516-%3C%2Fspan%3E1519&rft.date=1991-12&rft.issn=0090-3493&rft_id=info%3Apmid%2F1959371&rft_id=info%3Adoi%2F10.1097%2F00003246-199112000-00013&rft.aulast=Denys&rft.aufirst=B.+G.&rft.au=Uretsky%2C+B.+F.&rft_id=https%3A%2F%2Fpubmed.ncbi.nlm.nih.gov%2F1959371%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASternocleidomastoid+muscle" class="Z3988"></span></span> </li> </ol></div></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">This article uses <a href="/wiki/Anatomical_terminology" title="Anatomical terminology">anatomical terminology</a>.</div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Muscles_of_the_neck255" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Muscles_of_neck" title="Template:Muscles of neck"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Muscles_of_neck" title="Template talk:Muscles of neck"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Muscles_of_neck" title="Special:EditPage/Template:Muscles of neck"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Muscles_of_the_neck255" style="font-size:114%;margin:0 4em"><a href="/wiki/Muscle" title="Muscle">Muscles</a> of the <a href="/wiki/Neck" title="Neck">neck</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cervical_muscles#Cervical" class="mw-redirect" title="Cervical muscles">Cervical</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Platysma_muscle" title="Platysma muscle">Platysma</a></li> <li><a class="mw-selflink selflink">Sternocleidomastoid</a></li> <li><a href="/wiki/Longus_capitis_muscle" title="Longus capitis muscle">Longus capitis</a></li> <li><a href="/wiki/Longus_colli_muscle" title="Longus colli muscle">Longus colli</a></li> <li><a href="/wiki/Scalene_muscles" title="Scalene muscles">Scalene</a> <ul><li><a href="/wiki/Anterior_scalene" class="mw-redirect" title="Anterior scalene">anterior</a></li> <li><a href="/wiki/Middle_scalene" class="mw-redirect" title="Middle scalene">middle</a></li> <li><a href="/wiki/Posterior_scalene" class="mw-redirect" title="Posterior scalene">posterior</a></li></ul></li> <li><a href="/wiki/Rectus_capitis_anterior_muscle" title="Rectus capitis anterior muscle">Rectus capitis anterior muscle</a></li> <li><a href="/wiki/Rectus_capitis_lateralis_muscle" title="Rectus capitis lateralis muscle">Rectus capitis lateralis muscle</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Suboccipital_muscles" title="Suboccipital muscles">Suboccipital</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i>Rectus capitis posterior</i> <ul><li><a href="/wiki/Rectus_capitis_posterior_major_muscle" title="Rectus capitis posterior major muscle">major</a></li> <li><a href="/wiki/Rectus_capitis_posterior_minor_muscle" title="Rectus capitis posterior minor muscle">minor</a></li></ul></li> <li><i>Obliquus capitis</i> <ul><li><a href="/wiki/Obliquus_capitis_inferior_muscle" title="Obliquus capitis inferior muscle">inferior</a></li> <li><a href="/wiki/Obliquus_capitis_superior_muscle" title="Obliquus capitis superior muscle">superior</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Suprahyoid_muscles" title="Suprahyoid muscles">Suprahyoid</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Mylohyoid_muscle" title="Mylohyoid muscle">Mylohyoid</a></li> <li><a href="/wiki/Stylohyoid_muscle" title="Stylohyoid muscle">Stylohyoid</a></li> <li><a href="/wiki/Digastric_muscle" title="Digastric muscle">Digastric</a></li> <li><a href="/wiki/Geniohyoid_muscle" title="Geniohyoid muscle">Geniohyoid</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Infrahyoid_muscles" title="Infrahyoid muscles">Infrahyoid</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Thyrohyoid_muscle" title="Thyrohyoid muscle">Thyrohyoid</a></li> <li><a href="/wiki/Sternohyoid_muscle" title="Sternohyoid muscle">Sternohyoid</a></li> <li><a href="/wiki/Sternothyroid_muscle" title="Sternothyroid muscle">Sternothyroid</a></li> <li><a href="/wiki/Omohyoid_muscle" title="Omohyoid muscle">Omohyoid</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Pharyngeal_muscles" title="Pharyngeal muscles">Pharynx</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pharyngeal_constrictor" class="mw-redirect" title="Pharyngeal constrictor">Pharyngeal constrictor</a> <ul><li><a href="/wiki/Superior_pharyngeal_constrictor_muscle" title="Superior pharyngeal constrictor muscle">superior</a></li> <li><a href="/wiki/Middle_pharyngeal_constrictor_muscle" title="Middle pharyngeal constrictor muscle">middle</a></li> <li><a href="/wiki/Inferior_pharyngeal_constrictor_muscle" title="Inferior pharyngeal constrictor muscle">inferior</a></li></ul></li> <li><a href="/wiki/Stylopharyngeus_muscle" title="Stylopharyngeus muscle">Stylopharyngeus</a></li> <li><a href="/wiki/Salpingopharyngeus_muscle" title="Salpingopharyngeus muscle">Salpingopharyngeus</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Muscles_of_larynx" class="mw-redirect" title="Muscles of larynx">Larynx</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cricothyroid_muscle" title="Cricothyroid muscle">Cricothyroid</a></li> <li><a href="/wiki/Cricoarytenoid_muscle" title="Cricoarytenoid muscle">Cricoarytenoid</a> <ul><li><a href="/wiki/Posterior_cricoarytenoid_muscle" title="Posterior cricoarytenoid muscle">posterior</a></li> <li><a href="/wiki/Lateral_cricoarytenoid_muscle" title="Lateral cricoarytenoid muscle">lateral</a></li></ul></li> <li><a href="/wiki/Arytenoid_muscle" title="Arytenoid muscle">Arytenoid</a> <ul><li><a href="/wiki/Oblique_arytenoid" title="Oblique arytenoid">oblique arytenoid</a> <ul><li><i><a href="/wiki/Aryepiglottic_muscle" title="Aryepiglottic muscle">aryepiglottic</a></i></li></ul></li> <li><a href="/wiki/Arytenoid_muscle" title="Arytenoid muscle">transverse arytenoid</a></li></ul></li> <li><a href="/wiki/Thyroarytenoid_muscle" title="Thyroarytenoid muscle">Thyroarytenoid</a> <ul><li><a href="/wiki/Vocal_muscle" class="mw-redirect" title="Vocal muscle">vocal</a></li> <li><a href="/wiki/Thyroepiglottic_muscle" title="Thyroepiglottic muscle">thyroepiglottic</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Trachea" title="Trachea">Trachea</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Trachealis_muscle" title="Trachealis muscle">Trachealis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fascia" title="Fascia">Fasciae</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Deep_cervical_fascia" title="Deep cervical fascia">Deep cervical fascia</a> <ul><li><a href="/wiki/Pretracheal_fascia" title="Pretracheal fascia">Pretracheal fascia</a></li> <li><a href="/wiki/Prevertebral_fascia" title="Prevertebral fascia">Prevertebral fascia</a></li> <li><a href="/wiki/Investing_layer_of_deep_cervical_fascia" title="Investing layer of deep cervical fascia">Investing layer</a></li></ul></li> <li><a href="/wiki/Carotid_sheath" title="Carotid sheath">Carotid sheath</a></li> <li><a href="/wiki/Alar_fascia" title="Alar fascia">Alar fascia</a></li> <li><a href="/wiki/Palatine_aponeurosis" title="Palatine aponeurosis">Palatine aponeurosis</a></li> <li><a href="/wiki/Buccopharyngeal_fascia" title="Buccopharyngeal fascia">Buccopharyngeal fascia</a></li> <li><a href="/wiki/Pharyngobasilar_fascia" title="Pharyngobasilar fascia">Pharyngobasilar fascia</a></li> <li><a href="/wiki/Pharyngeal_raphe" title="Pharyngeal raphe">Pharyngeal raphe</a></li></ul> </div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output .portal-bar-unbordered{padding:0 1.7em;margin-left:0}.mw-parser-output .portal-bar-header{margin:0 1em 0 0.5em;flex:0 0 auto;min-height:24px}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;flex:0 1 auto;padding:0.15em 0;column-gap:1em;align-items:baseline;margin:0;list-style:none}.mw-parser-output .portal-bar-content-related{margin:0;list-style:none}.mw-parser-output .portal-bar-item{display:inline-block;margin:0.15em 0.2em;min-height:24px;line-height:24px}@media screen and (max-width:768px){.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;flex-flow:column wrap;align-items:baseline}.mw-parser-output .portal-bar-header{text-align:center;flex:0;padding-left:0.5em;margin:0 auto}.mw-parser-output .portal-bar-related{font-size:100%;align-items:flex-start}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;align-items:center;flex:0;column-gap:1em;border-top:1px solid #a2a9b1;margin:0 auto;list-style:none}.mw-parser-output .portal-bar-content-related{border-top:none;margin:0;list-style:none}}.mw-parser-output .navbox+link+.portal-bar,.mw-parser-output .navbox+style+.portal-bar,.mw-parser-output .navbox+link+.portal-bar-bordered,.mw-parser-output .navbox+style+.portal-bar-bordered,.mw-parser-output .sister-bar+link+.portal-bar,.mw-parser-output .sister-bar+style+.portal-bar,.mw-parser-output .portal-bar+.navbox-styles+.navbox,.mw-parser-output .portal-bar+.navbox-styles+.sister-bar{margin-top:-1px}</style><div class="portal-bar noprint metadata noviewer portal-bar-bordered" role="navigation" aria-label="Portals"><span class="portal-bar-header"><a href="/wiki/Wikipedia:Contents/Portals" title="Wikipedia:Contents/Portals">Portal</a>:</span><ul class="portal-bar-content"><li class="portal-bar-item"><span class="nowrap"><span typeof="mw:File"><a href="/wiki/File:Anatomy_posture_and_body_mechanics_08.jpg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Anatomy_posture_and_body_mechanics_08.jpg/12px-Anatomy_posture_and_body_mechanics_08.jpg" decoding="async" width="12" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Anatomy_posture_and_body_mechanics_08.jpg/18px-Anatomy_posture_and_body_mechanics_08.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Anatomy_posture_and_body_mechanics_08.jpg/24px-Anatomy_posture_and_body_mechanics_08.jpg 2x" data-file-width="653" data-file-height="1024" /></a></span> </span><a href="/wiki/Portal:Anatomy" title="Portal:Anatomy">Anatomy</a></li></ul></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox authority-control" aria-label="Navbox575" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q272830#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a class="external text" href="http://tools.wmflabs.org/wikidata-externalid-url/?p=1323&url_prefix=https:%2F%2Fwww.unifr.ch%2Fifaa%2FPublic%2FEntryPage%2FTA98%20Tree%2FEntity%20TA98%20EN%2F&url_suffix=%20Entity%20TA98%20EN.htm&id=A04.2.01.008">Terminologia Anatomica</a></span></li></ul></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Sternocleidomastoid_muscle&oldid=1258124378">https://en.wikipedia.org/w/index.php?title=Sternocleidomastoid_muscle&oldid=1258124378</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Wikipedia_articles_incorporating_text_from_the_20th_edition_of_Gray%27s_Anatomy_(1918)" title="Category:Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918)">Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918)</a></li><li><a href="/wiki/Category:Muscles_of_the_head_and_neck" title="Category:Muscles of the head and neck">Muscles of the head and neck</a></li><li><a href="/wiki/Category:Otorhinolaryngology" title="Category:Otorhinolaryngology">Otorhinolaryngology</a></li><li><a href="/wiki/Category:Human_head_and_neck" title="Category:Human head and neck">Human head and neck</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Commons_category_link_is_on_Wikidata" title="Category:Commons category link is on Wikidata">Commons category link is on Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 18 November 2024, at 07:06<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Sternocleidomastoid_muscle&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" lang="en" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-header-container vector-sticky-header-container"> <div id="vector-sticky-header" class="vector-sticky-header"> <div class="vector-sticky-header-start"> <div class="vector-sticky-header-icon-start vector-button-flush-left vector-button-flush-right" aria-hidden="true"> <button class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-sticky-header-search-toggle" tabindex="-1" data-event-name="ui.vector-sticky-search-form.icon"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </button> </div> <div role="search" class="vector-search-box-vue vector-search-box-show-thumbnail vector-search-box"> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail"> <form action="/w/index.php" id="vector-sticky-search-form" class="cdx-search-input cdx-search-input--has-end-button"> <div class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia"> <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <div class="vector-sticky-header-context-bar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-sticky-header-toc" class="vector-dropdown mw-portlet mw-portlet-sticky-header-toc vector-sticky-header-toc vector-button-flush-left" > <input type="checkbox" id="vector-sticky-header-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-sticky-header-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-sticky-header-toc-label" for="vector-sticky-header-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-sticky-header-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div class="vector-sticky-header-context-bar-primary" aria-hidden="true" ><span class="mw-page-title-main">Sternocleidomastoid muscle</span></div> </div> </div> <div class="vector-sticky-header-end" aria-hidden="true"> <div class="vector-sticky-header-icons"> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-talk-sticky-header" tabindex="-1" data-event-name="talk-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbles mw-ui-icon-wikimedia-speechBubbles"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-subject-sticky-header" tabindex="-1" data-event-name="subject-sticky-header"><span class="vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-history-sticky-header" tabindex="-1" data-event-name="history-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-history mw-ui-icon-wikimedia-wikimedia-history"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-watchlink" id="ca-watchstar-sticky-header" tabindex="-1" data-event-name="watch-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-star mw-ui-icon-wikimedia-wikimedia-star"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-edit-sticky-header" tabindex="-1" data-event-name="wikitext-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-wikiText mw-ui-icon-wikimedia-wikimedia-wikiText"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-ve-edit-sticky-header" tabindex="-1" data-event-name="ve-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-edit mw-ui-icon-wikimedia-wikimedia-edit"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-viewsource-sticky-header" tabindex="-1" data-event-name="ve-edit-protected-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-editLock mw-ui-icon-wikimedia-wikimedia-editLock"></span> <span></span> </a> </div> <div class="vector-sticky-header-buttons"> <button class="cdx-button cdx-button--weight-quiet mw-interlanguage-selector" id="p-lang-btn-sticky-header" tabindex="-1" data-event-name="ui.dropdown-p-lang-btn-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-language mw-ui-icon-wikimedia-wikimedia-language"></span> <span>33 languages</span> </button> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection-sticky-header" tabindex="-1" data-event-name="addsection-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>Add topic</span> </a> </div> <div class="vector-sticky-header-icon-end"> <div class="vector-user-links"> </div> </div> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-567b97b4dc-kvwzr","wgBackendResponseTime":115,"wgPageParseReport":{"limitreport":{"cputime":"0.679","walltime":"0.846","ppvisitednodes":{"value":2102,"limit":1000000},"postexpandincludesize":{"value":69223,"limit":2097152},"templateargumentsize":{"value":7525,"limit":2097152},"expansiondepth":{"value":17,"limit":100},"expensivefunctioncount":{"value":2,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":58708,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 762.967 1 -total"," 41.04% 313.146 1 Template:Infobox_muscle"," 40.58% 309.614 1 Template:Infobox_anatomy"," 39.85% 304.072 1 Template:Infobox"," 18.43% 140.583 2 Template:Refn"," 16.33% 124.576 1 Template:MerriamWebsterDictionary"," 15.88% 121.141 1 Template:Cite_web"," 12.26% 93.566 1 Template:Reflist"," 11.26% 85.923 1 Template:Muscles_of_neck"," 10.88% 83.013 1 Template:Navbox"]},"scribunto":{"limitreport-timeusage":{"value":"0.435","limit":"10.000"},"limitreport-memusage":{"value":10051269,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-7878cd4448-64tw2","timestamp":"20250211202313","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Sternocleidomastoid muscle","url":"https:\/\/en.wikipedia.org\/wiki\/Sternocleidomastoid_muscle","sameAs":"http:\/\/www.wikidata.org\/entity\/Q272830","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q272830","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2004-02-12T00:54:58Z","dateModified":"2024-11-18T07:06:23Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/1\/1a\/Sternocleidomastoideus.png","headline":"paired muscle of the neck that traverses the neck between the manubrium sterni and the mastoid process"}</script> </body> </html>