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[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logga 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"> Sidor för utloggade redigerare <a href="/wiki/Hj%C3%A4lp:Introduktion" aria-label="Läs mer om redigering"><span>läs mer</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:Mina_bidrag" title="En lista över redigeringar från denna IP-adress [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:Min_diskussion" title="Diskussion om redigeringar från det här IP-numret [n]" accesskey="n"><span>Diskussion</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="Webbplats"> <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="Innehåll" 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">Innehåll</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">dölj</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">Inledning</div> </a> </li> <li id="toc-Referenser" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referenser"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Referenser</span> </div> </a> <button aria-controls="toc-Referenser-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>Växla underavsnittet Referenser</span> </button> <ul id="toc-Referenser-sublist" class="vector-toc-list"> <li id="toc-Noter" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Noter"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Noter</span> </div> </a> <ul id="toc-Noter-sublist" class="vector-toc-list"> </ul> </li> </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="Innehåll" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <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="Växla innehållsförteckningen" > <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">Växla innehållsförteckningen</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">Hjärtmuskulatur</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="Gå till en artikel på ett annat språk. Tillgänglig på 62 språk" > <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-62" 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">62 språk</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_%D8%A7%D9%84%D9%82%D9%84%D8%A8" title="عضلة القلب – arabiska" lang="ar" hreflang="ar" data-title="عضلة القلب" data-language-autonym="العربية" data-language-local-name="arabiska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Miokard" title="Miokard – azerbajdzjanska" lang="az" hreflang="az" data-title="Miokard" data-language-autonym="Azərbaycanca" data-language-local-name="azerbajdzjanska" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B9%E0%A7%83%E0%A7%8E%E0%A6%AA%E0%A7%87%E0%A6%B6%E0%A7%80" title="হৃৎপেশী – bengali" lang="bn" hreflang="bn" data-title="হৃৎপেশী" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9C%D0%B8%D0%BE%D0%BA%D0%B0%D1%80%D0%B4" title="Миокард – bulgariska" lang="bg" hreflang="bg" data-title="Миокард" data-language-autonym="Български" data-language-local-name="bulgariska" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Miokard" title="Miokard – bosniska" lang="bs" hreflang="bs" data-title="Miokard" data-language-autonym="Bosanski" data-language-local-name="bosniska" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/M%C3%BAscul_card%C3%ADac" title="Múscul cardíac – katalanska" lang="ca" hreflang="ca" data-title="Múscul cardíac" data-language-autonym="Català" data-language-local-name="katalanska" 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/Srde%C4%8Dn%C3%AD_svalovina" title="Srdeční svalovina – tjeckiska" lang="cs" hreflang="cs" data-title="Srdeční svalovina" data-language-autonym="Čeština" data-language-local-name="tjeckiska" 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/Herzmuskel" title="Herzmuskel – tyska" lang="de" hreflang="de" data-title="Herzmuskel" data-language-autonym="Deutsch" data-language-local-name="tyska" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-dv mw-list-item"><a href="https://dv.wikipedia.org/wiki/%DE%80%DE%A8%DE%8C%DE%AA_%DE%89%DE%A6%DE%90%DE%B0" title="ހިތު މަސް – divehi" lang="dv" hreflang="dv" data-title="ހިތު މަސް" data-language-autonym="ދިވެހިބަސް" data-language-local-name="divehi" class="interlanguage-link-target"><span>ދިވެހިބަސް</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/S%C3%BCdamelihas" title="Südamelihas – estniska" lang="et" hreflang="et" data-title="Südamelihas" data-language-autonym="Eesti" data-language-local-name="estniska" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9C%CF%85%CE%BF%CE%BA%CE%AC%CF%81%CE%B4%CE%B9%CE%BF" title="Μυοκάρδιο – grekiska" lang="el" hreflang="el" data-title="Μυοκάρδιο" data-language-autonym="Ελληνικά" data-language-local-name="grekiska" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Cardiac_muscle" title="Cardiac muscle – engelska" lang="en" hreflang="en" data-title="Cardiac muscle" data-language-autonym="English" data-language-local-name="engelska" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Miocardio" title="Miocardio – spanska" lang="es" hreflang="es" data-title="Miocardio" data-language-autonym="Español" data-language-local-name="spanska" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Miokardio" title="Miokardio – baskiska" lang="eu" hreflang="eu" data-title="Miokardio" data-language-autonym="Euskara" data-language-local-name="baskiska" 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_%D9%82%D9%84%D8%A8" title="ماهیچه قلب – persiska" lang="fa" hreflang="fa" data-title="ماهیچه قلب" data-language-autonym="فارسی" data-language-local-name="persiska" 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/Myocarde" title="Myocarde – franska" lang="fr" hreflang="fr" data-title="Myocarde" data-language-autonym="Français" data-language-local-name="franska" 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_card%C3%ADaco" title="Músculo cardíaco – galiciska" lang="gl" hreflang="gl" data-title="Músculo cardíaco" data-language-autonym="Galego" data-language-local-name="galiciska" 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/%EC%8B%AC%EC%9E%A5%EA%B7%BC%EC%9C%A1" title="심장근육 – koreanska" lang="ko" hreflang="ko" data-title="심장근육" data-language-autonym="한국어" data-language-local-name="koreanska" 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/%D5%84%D5%AB%D5%B8%D5%AF%D5%A1%D6%80%D5%A4" title="Միոկարդ – armeniska" lang="hy" hreflang="hy" data-title="Միոկարդ" data-language-autonym="Հայերեն" data-language-local-name="armeniska" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B9%E0%A5%83%E0%A4%A6_%E0%A4%AA%E0%A5%87%E0%A4%B6%E0%A5%80" title="हृद पेशी – hindi" lang="hi" hreflang="hi" data-title="हृद पेशी" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Otot_jantung" title="Otot jantung – indonesiska" lang="id" hreflang="id" data-title="Otot jantung" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiska" 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/Miocardio" title="Miocardio – italienska" lang="it" hreflang="it" data-title="Miocardio" data-language-autonym="Italiano" data-language-local-name="italienska" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%A8%D7%99%D7%A8_%D7%94%D7%9C%D7%91" title="שריר הלב – hebreiska" lang="he" hreflang="he" data-title="שריר הלב" data-language-autonym="עברית" data-language-local-name="hebreiska" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%96%D2%AF%D1%80%D0%B5%D0%BA_%D0%B1%D2%B1%D0%BB%D1%88%D1%8B%D2%9B%D0%B5%D1%82%D1%96" title="Жүрек бұлшықеті – kazakiska" lang="kk" hreflang="kk" data-title="Жүрек бұлшықеті" data-language-autonym="Қазақша" data-language-local-name="kazakiska" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Misuli_ya_moyo" title="Misuli ya moyo – swahili" lang="sw" hreflang="sw" data-title="Misuli ya moyo" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Misk_kadyak" title="Misk kadyak – haitiska" lang="ht" hreflang="ht" data-title="Misk kadyak" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haitiska" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Dilemas%C3%BBlke" title="Dilemasûlke – kurdiska" lang="ku" hreflang="ku" data-title="Dilemasûlke" data-language-autonym="Kurdî" data-language-local-name="kurdiska" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9C%D0%B8%D0%BE%D0%BA%D0%B0%D1%80%D0%B4" title="Миокард – kirgiziska" lang="ky" hreflang="ky" data-title="Миокард" data-language-autonym="Кыргызча" data-language-local-name="kirgiziska" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Myocardium" title="Myocardium – latin" lang="la" hreflang="la" data-title="Myocardium" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Miokards" title="Miokards – lettiska" lang="lv" hreflang="lv" data-title="Miokards" data-language-autonym="Latviešu" data-language-local-name="lettiska" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/%C5%A0irdies_skersaruo%C5%BEis_raumuo" title="Širdies skersaruožis raumuo – litauiska" lang="lt" hreflang="lt" data-title="Širdies skersaruožis raumuo" data-language-autonym="Lietuvių" data-language-local-name="litauiska" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Hertspier" title="Hertspier – limburgiska" lang="li" hreflang="li" data-title="Hertspier" data-language-autonym="Limburgs" data-language-local-name="limburgiska" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Sz%C3%ADvizom" title="Szívizom – ungerska" lang="hu" hreflang="hu" data-title="Szívizom" data-language-autonym="Magyar" data-language-local-name="ungerska" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D1%80%D1%86%D0%B5%D0%B2_%D0%BC%D1%83%D1%81%D0%BA%D1%83%D0%BB" title="Срцев мускул – makedonska" lang="mk" hreflang="mk" data-title="Срцев мускул" data-language-autonym="Македонски" data-language-local-name="makedonska" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Otot_jantung" title="Otot jantung – malajiska" lang="ms" hreflang="ms" data-title="Otot jantung" data-language-autonym="Bahasa Melayu" data-language-local-name="malajiska" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Hartspierweefsel" title="Hartspierweefsel – nederländska" lang="nl" hreflang="nl" data-title="Hartspierweefsel" data-language-autonym="Nederlands" data-language-local-name="nederländska" 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/%E5%BF%83%E7%AD%8B" title="心筋 – japanska" lang="ja" hreflang="ja" data-title="心筋" data-language-autonym="日本語" data-language-local-name="japanska" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%94%D0%B5%D0%B3%D0%B0%D0%BD_%D0%BE%D1%8C%D0%B7%D0%B3%D0%B0%D1%88" title="Деган оьзгаш – tjetjenska" lang="ce" hreflang="ce" data-title="Деган оьзгаш" data-language-autonym="Нохчийн" data-language-local-name="tjetjenska" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Hjertemuskelen" title="Hjertemuskelen – norskt bokmål" lang="nb" hreflang="nb" data-title="Hjertemuskelen" data-language-autonym="Norsk bokmål" data-language-local-name="norskt bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Hjartemuskelen" title="Hjartemuskelen – nynorska" lang="nn" hreflang="nn" data-title="Hjartemuskelen" data-language-autonym="Norsk nynorsk" data-language-local-name="nynorska" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Miokard" title="Miokard – uzbekiska" lang="uz" hreflang="uz" data-title="Miokard" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbekiska" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mi%C4%99sie%C5%84_sercowy" title="Mięsień sercowy – polska" lang="pl" hreflang="pl" data-title="Mięsień sercowy" data-language-autonym="Polski" data-language-local-name="polska" 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_card%C3%ADaco" title="Músculo cardíaco – portugisiska" lang="pt" hreflang="pt" data-title="Músculo cardíaco" data-language-autonym="Português" data-language-local-name="portugisiska" 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/Miocard" title="Miocard – rumänska" lang="ro" hreflang="ro" data-title="Miocard" data-language-autonym="Română" data-language-local-name="rumänska" 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%9C%D0%B8%D0%BE%D0%BA%D0%B0%D1%80%D0%B4" title="Миокард – ryska" lang="ru" hreflang="ru" data-title="Миокард" data-language-autonym="Русский" data-language-local-name="ryska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%B8%E0%B6%BA%E0%B7%9D%E0%B6%9A%E0%B7%8F%E0%B6%A9%E0%B7%92%E0%B6%BA%E0%B6%B8" title="මයෝකාඩියම – singalesiska" lang="si" hreflang="si" data-title="මයෝකාඩියම" data-language-autonym="සිංහල" data-language-local-name="singalesiska" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Cardiac_muscle" title="Cardiac muscle – Simple English" lang="en-simple" hreflang="en-simple" data-title="Cardiac muscle" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Srdcov%C3%A1_svalovina" title="Srdcová svalovina – slovakiska" lang="sk" hreflang="sk" data-title="Srdcová svalovina" data-language-autonym="Slovenčina" data-language-local-name="slovakiska" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Sr%C4%8Dna_mi%C5%A1i%C4%8Dnina" title="Srčna mišičnina – slovenska" lang="sl" hreflang="sl" data-title="Srčna mišičnina" data-language-autonym="Slovenščina" data-language-local-name="slovenska" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%85%D8%A7%D8%B3%D9%88%D9%88%D9%84%DA%A9%DB%95%DB%8C_%D8%AF%DA%B5" title="ماسوولکەی دڵ – centralkurdiska" lang="ckb" hreflang="ckb" data-title="ماسوولکەی دڵ" data-language-autonym="کوردی" data-language-local-name="centralkurdiska" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D1%80%D1%87%D0%B0%D0%BD%D0%B8_%D0%BC%D0%B8%D1%88%D0%B8%D1%9B" title="Срчани мишић – serbiska" lang="sr" hreflang="sr" data-title="Срчани мишић" data-language-autonym="Српски / srpski" data-language-local-name="serbiska" 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/Sr%C4%8Dani_mi%C5%A1i%C4%87" title="Srčani mišić – serbokroatiska" lang="sh" hreflang="sh" data-title="Srčani mišić" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroatiska" 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/Myokardium" title="Myokardium – finska" lang="fi" hreflang="fi" data-title="Myokardium" data-language-autonym="Suomi" data-language-local-name="finska" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%87%E0%AE%A4%E0%AE%AF%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AE%9A%E0%AF%88" title="இதயத்தசை – tamil" lang="ta" hreflang="ta" data-title="இதயத்தசை" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9C%D0%B8%D0%BE%D0%BA%D0%B0%D1%80%D0%B4" title="Миокард – tatariska" lang="tt" hreflang="tt" data-title="Миокард" data-language-autonym="Татарча / tatarça" data-language-local-name="tatariska" class="interlanguage-link-target"><span>Татарча / tatarça</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%AB%E0%B8%B1%E0%B8%A7%E0%B9%83%E0%B8%88" title="กล้ามเนื้อหัวใจ – thailändska" lang="th" hreflang="th" data-title="กล้ามเนื้อหัวใจ" data-language-autonym="ไทย" data-language-local-name="thailändska" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kalp_kas%C4%B1" title="Kalp kası – turkiska" lang="tr" hreflang="tr" data-title="Kalp kası" data-language-autonym="Türkçe" data-language-local-name="turkiska" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9C%D1%96%D0%BE%D0%BA%D0%B0%D1%80%D0%B4" title="Міокард – ukrainska" lang="uk" hreflang="uk" data-title="Міокард" data-language-autonym="Українська" data-language-local-name="ukrainska" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/C%C6%A1_tim" title="Cơ tim – vietnamesiska" lang="vi" hreflang="vi" data-title="Cơ tim" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamesiska" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%94%D7%90%D7%A8%D7%A6%D7%9E%D7%95%D7%A1%D7%A7%D7%9C" title="הארצמוסקל – jiddisch" lang="yi" hreflang="yi" data-title="הארצמוסקל" data-language-autonym="ייִדיש" data-language-local-name="jiddisch" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Zerria_bele" title="Zerria bele – Zazaki" lang="diq" hreflang="diq" data-title="Zerria bele" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%BF%83%E8%82%8C" title="心肌 – kinesiska" lang="zh" hreflang="zh" data-title="心肌" data-language-autonym="中文" data-language-local-name="kinesiska" 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/Q84133#sitelinks-wikipedia" title="Redigera interwikilänkar" class="wbc-editpage">Redigera länkar</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="Namnrymder"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul 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id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="sv" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fil:Diagram_of_the_human_heart_(cropped)-sv.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Diagram_of_the_human_heart_%28cropped%29-sv.svg/250px-Diagram_of_the_human_heart_%28cropped%29-sv.svg.png" decoding="async" width="250" height="243" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Diagram_of_the_human_heart_%28cropped%29-sv.svg/375px-Diagram_of_the_human_heart_%28cropped%29-sv.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/65/Diagram_of_the_human_heart_%28cropped%29-sv.svg/500px-Diagram_of_the_human_heart_%28cropped%29-sv.svg.png 2x" data-file-width="653" data-file-height="634" /></a><figcaption>Det rosa som omger kamrarna och förmaken är hjärtats väggar, som huvudsakligen består av ett tjockt muskellager.</figcaption></figure> <p><b>Hjärtmuskulatur</b> eller <b>myokardium</b> (<a href="/wiki/Nylatin" class="mw-redirect" title="Nylatin">nylatin</a>; av <a href="/wiki/Grekiska" title="Grekiska">grekiskans</a> μυς, "muskel", och καρδία, "hjärta") är den <a href="/wiki/Muskulatur" class="mw-redirect" title="Muskulatur">muskulatur</a> som bygger upp <a href="/wiki/Hj%C3%A4rta" title="Hjärta">hjärtat</a>. Hjärtats väggar består huvudsakligen av ett muskellager – <b>myokardium</b> – omgiven av ett tunt <a href="/w/index.php?title=Epikardium&action=edit&redlink=1" class="new" title="Epikardium [inte skriven än]">epikardium</a> på hjärtats utsida, och på insidan av kamrar och förmak ett likaledes tunt <a href="/w/index.php?title=Endokardium&action=edit&redlink=1" class="new" title="Endokardium [inte skriven än]">endokardium</a>. I vänster kammare är myokardiet ungefär 10 mm tjockt, men i höger kammare är det endast 3 mm. Detta beror på att vänster hjärthalva jobbar mot ett högre tryck. </p><p>Hjärtmuskulaturen är tvärstrimmig med en central <a href="/wiki/Cellk%C3%A4rna" title="Cellkärna">cellkärna</a> i varje cell, till skillnad från tvärstrimmig <a href="/wiki/Skelettmuskulatur" class="mw-redirect" title="Skelettmuskulatur">skelettmuskulatur</a> där varje cell har flera perifert belägna kärnor. En del hjärtmuskelceller har dock två kärnor. Hjärtmuskelcellerna är korta och förgrenade, med relativt liten diameter. </p><p>Hjärtmuskelcellerna har särskilda förbindelser mellan cellerna, på sätt som inte andra celler har, och bildar därför ett sammanhängande nätverk som fördelar nervimpulsen genom hjärtat så att muskeln kan dra ihop sig på ett koordinerat sätt. Cellförbindelserna syns i <a href="/wiki/Histologi" title="Histologi">histologiska</a> preparat som färgade band, glansstrimmor. Innerst i hjärtats muskelvägg finns <a href="/wiki/Purkinjefiber" title="Purkinjefiber">purkinjefibrer</a>, ett slags specialiserade hjärtmuskelceller med funktion att leda den impuls som får hjärtat att dra ihop sig genom hjärtats <a href="/wiki/V%C3%A4vnad" title="Vävnad">vävnad</a>. Hjärtmuskulaturen behöver mycket <a href="/wiki/Syre" title="Syre">syre</a> och <a href="/wiki/Kapill%C3%A4r" title="Kapillär">kapillärerna</a> ligger tätt i hjärtat. </p><p>Om hjärtats muskelceller skulle skadas genom exempelvis en <a href="/wiki/Hj%C3%A4rtinfarkt" title="Hjärtinfarkt">hjärtinfarkt</a> kan de inte bytas ut mot andra celler och återställa hjärtmuskeln i sitt ursprungliga skick. Istället bildas ett <a href="/wiki/%C3%84rr" title="Ärr">ärr</a> på hjärtat och det kommer aldrig att återfå samma kraft.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-reference-link-bracket">[</span>1<span class="cite-reference-link-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Referenser">Referenser</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hj%C3%A4rtmuskulatur&veaction=edit&section=1" title="Redigera avsnitt: Referenser" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hj%C3%A4rtmuskulatur&action=edit&section=1" title="Redigera avsnitts källkod: Referenser"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite style="font-style:normal" class="web"><a rel="nofollow" class="external text" href="https://mesh.kib.ki.se/term/D009206/myocardium">”Hjärtmuskel”</a>. <i><span><a href="/wiki/Svensk_MeSH" class="mw-redirect" title="Svensk MeSH">Svensk MeSH</a></span></i>. <a href="/wiki/Karolinska_Institutet" title="Karolinska Institutet">Karolinska Institutet</a><span class="printonly">. <a rel="nofollow" class="external free" href="https://mesh.kib.ki.se/term/D009206/myocardium">https://mesh.kib.ki.se/term/D009206/myocardium</a></span><span class="reference-accessdate">. Läst 4 juli 2021</span>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=Hj%C3%A4rtmuskel&rft.atitle=%5B%5BSvensk+MeSH%5D%5D&rft.pub=%5B%5BKarolinska+Institutet%5D%5D&rft_id=https%3A%2F%2Fmesh.kib.ki.se%2Fterm%2FD009206%2Fmyocardium&rfr_id=info:sid/en.wikipedia.org:Hj%C3%A4rtmuskulatur"><span style="display: none;"> </span></span></li></ul> <div class="mw-heading mw-heading3"><h3 id="Noter">Noter</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hj%C3%A4rtmuskulatur&veaction=edit&section=2" title="Redigera avsnitt: Noter" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hj%C3%A4rtmuskulatur&action=edit&section=2" title="Redigera avsnitts källkod: Noter"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <span class="reference-text"><cite style="font-style:normal" class="web"><a rel="nofollow" class="external text" href="http://www.pacemaker-info.se/sida/myokardiet">”Myokardiet”</a>. Pacemaker-info.se<span class="printonly">. <a rel="nofollow" class="external free" href="http://www.pacemaker-info.se/sida/myokardiet">http://www.pacemaker-info.se/sida/myokardiet</a></span><span class="reference-accessdate">. Läst 4 juli 2021</span>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=Myokardiet&rft.atitle=&rft.pub=Pacemaker-info.se&rft_id=http%3A%2F%2Fwww.pacemaker-info.se%2Fsida%2Fmyokardiet&rfr_id=info:sid/en.wikipedia.org:Hj%C3%A4rtmuskulatur"><span style="display: none;"> </span></span></span> </li> </ol></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Hämtad från ”<a dir="ltr" href="https://sv.wikipedia.org/w/index.php?title=Hjärtmuskulatur&oldid=49410244">https://sv.wikipedia.org/w/index.php?title=Hjärtmuskulatur&oldid=49410244</a>”</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Wikipedia:Kategorier" title="Wikipedia:Kategorier">Kategorier</a>: <ul><li><a href="/wiki/Kategori:V%C3%A4vnader" title="Kategori:Vävnader">Vävnader</a></li><li><a href="/wiki/Kategori:Hj%C3%A4rtat" title="Kategori:Hjärtat">Hjärtat</a></li><li><a href="/wiki/Kategori:Muskelsystemet" title="Kategori:Muskelsystemet">Muskelsystemet</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"> Sidan redigerades senast den 4 juli 2021 kl. 11.53.</li> <li id="footer-info-copyright">Wikipedias text är tillgänglig under licensen <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/deed.sv">Creative Commons Erkännande-dela-lika 4.0 Unported</a>. 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