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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">Beginning</div> </a> </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">1</span> <span>Structure</span> </div> </a> <ul id="toc-Structure-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cardiac_cycle" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cardiac_cycle"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Cardiac cycle</span> </div> </a> <ul id="toc-Cardiac_cycle-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Heart's_pacemaker" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Heart's_pacemaker"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Heart's pacemaker</span> </div> </a> <ul id="toc-Heart's_pacemaker-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-ECG" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#ECG"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>ECG</span> </div> </a> <ul id="toc-ECG-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> <li id="toc-Other_websites" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Other_websites"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Other websites</span> </div> </a> <ul id="toc-Other_websites-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">Heart</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 203 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-203" 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">203 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Hart" title="Hart – Afrikaans" lang="af" hreflang="af" data-title="Hart" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Herz" title="Herz – Alemannic" lang="gsw" hreflang="gsw" data-title="Herz" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%8D%E1%89%A5" title="ልብ – Amharic" lang="am" hreflang="am" data-title="ልብ" data-language-autonym="አማርኛ" data-language-local-name="Amharic" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%B9%E0%A5%83%E0%A4%A6%E0%A4%AF" title="हृदय – Angika" lang="anp" hreflang="anp" data-title="हृदय" data-language-autonym="अंगिका" data-language-local-name="Angika" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/Heorte" title="Heorte – Old English" lang="ang" hreflang="ang" data-title="Heorte" data-language-autonym="Ænglisc" data-language-local-name="Old English" class="interlanguage-link-target"><span>Ænglisc</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%82%D9%84%D8%A8" title="قلب – Arabic" lang="ar" hreflang="ar" data-title="قلب" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Coraz%C3%B3n" title="Corazón – Aragonese" lang="an" hreflang="an" data-title="Corazón" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%A0%DC%92%DC%90" title="ܠܒܐ – Aramaic" lang="arc" hreflang="arc" data-title="ܠܒܐ" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="Aramaic" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D5%8D%D5%AB%D6%80%D5%BF" title="Սիրտ – Western Armenian" lang="hyw" hreflang="hyw" data-title="Սիրտ" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Inim%C3%A2" title="Inimâ – Aromanian" lang="rup" hreflang="rup" data-title="Inimâ" data-language-autonym="Armãneashti" data-language-local-name="Aromanian" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%B9%E0%A7%83%E0%A6%A6%E0%A6%AF%E0%A6%A8%E0%A7%8D%E0%A6%A4%E0%A7%8D%E0%A7%B0" title="হৃদযন্ত্ৰ – Assamese" lang="as" hreflang="as" data-title="হৃদযন্ত্ৰ" data-language-autonym="অসমীয়া" data-language-local-name="Assamese" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Coraz%C3%B3n" title="Corazón – Asturian" lang="ast" hreflang="ast" data-title="Corazón" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-atj mw-list-item"><a href="https://atj.wikipedia.org/wiki/Otehi" title="Otehi – Atikamekw" lang="atj" hreflang="atj" data-title="Otehi" data-language-autonym="Atikamekw" data-language-local-name="Atikamekw" class="interlanguage-link-target"><span>Atikamekw</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/%C3%91e%27%C3%A3" title="Ñe'ã – Guarani" lang="gn" hreflang="gn" data-title="Ñe'ã" data-language-autonym="Avañe'ẽ" data-language-local-name="Guarani" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-av mw-list-item"><a href="https://av.wikipedia.org/wiki/%D0%A0%D0%B0%D0%BA%D3%80" title="РакӀ – Avaric" lang="av" hreflang="av" data-title="РакӀ" data-language-autonym="Авар" data-language-local-name="Avaric" class="interlanguage-link-target"><span>Авар</span></a></li><li class="interlanguage-link interwiki-ay mw-list-item"><a href="https://ay.wikipedia.org/wiki/Lluqu" title="Lluqu – Aymara" lang="ay" hreflang="ay" data-title="Lluqu" data-language-autonym="Aymar aru" data-language-local-name="Aymara" class="interlanguage-link-target"><span>Aymar aru</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C3%9Cr%C9%99k" title="Ürək – Azerbaijani" lang="az" hreflang="az" data-title="Ürək" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%D9%88%D8%B1%DA%A9" title="اورک – South Azerbaijani" lang="azb" hreflang="azb" data-title="اورک" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</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%A6%BF%E0%A6%A3%E0%A7%8D%E0%A6%A1" title="হৃৎপিণ্ড – Bangla" lang="bn" hreflang="bn" data-title="হৃৎপিণ্ড" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bjn mw-list-item"><a href="https://bjn.wikipedia.org/wiki/Andui" title="Andui – Banjar" lang="bjn" hreflang="bjn" data-title="Andui" data-language-autonym="Banjar" data-language-local-name="Banjar" class="interlanguage-link-target"><span>Banjar</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Sim-ch%C5%8Dng" title="Sim-chōng – Minnan" lang="nan" hreflang="nan" data-title="Sim-chōng" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-map-bms mw-list-item"><a href="https://map-bms.wikipedia.org/wiki/Jantung" title="Jantung – Banyumasan" lang="jv-x-bms" hreflang="jv-x-bms" data-title="Jantung" data-language-autonym="Basa Banyumasan" data-language-local-name="Banyumasan" class="interlanguage-link-target"><span>Basa Banyumasan</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%99%D3%A9%D1%80%D3%99%D0%BA" title="Йөрәк – Bashkir" lang="ba" hreflang="ba" data-title="Йөрәк" data-language-autonym="Башҡортса" data-language-local-name="Bashkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D1%8D%D1%80%D1%86%D0%B0" title="Сэрца – Belarusian" lang="be" hreflang="be" data-title="Сэрца" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D1%8D%D1%80%D1%86%D0%B0" title="Сэрца – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сэрца" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%A6%E0%A4%BF%E0%A4%B2" title="दिल – Bhojpuri" lang="bh" hreflang="bh" data-title="दिल" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Puso" title="Puso – Central Bikol" lang="bcl" hreflang="bcl" data-title="Puso" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A1%D1%8A%D1%80%D1%86%D0%B5" title="Сърце – Bulgarian" lang="bg" hreflang="bg" data-title="Сърце" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%A6%E0%BE%99%E0%BD%B2%E0%BD%84%E0%BC%8B%E0%BC%8D" title="སྙིང་། – Tibetan" lang="bo" hreflang="bo" data-title="སྙིང་།" data-language-autonym="བོད་ཡིག" data-language-local-name="Tibetan" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Srce" title="Srce – Bosnian" lang="bs" hreflang="bs" data-title="Srce" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Kalon" title="Kalon – Breton" lang="br" hreflang="br" data-title="Kalon" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%97%D2%AF%D1%80%D1%85%D1%8D%D0%BD" title="Зүрхэн – Russia Buriat" lang="bxr" hreflang="bxr" data-title="Зүрхэн" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target"><span>Буряад</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Cor" title="Cor – Catalan" lang="ca" hreflang="ca" data-title="Cor" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A7%C4%95%D1%80%D0%B5" title="Чĕре – Chuvash" lang="cv" hreflang="cv" data-title="Чĕре" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Kasingkasing" title="Kasingkasing – Cebuano" lang="ceb" hreflang="ceb" data-title="Kasingkasing" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Srdce" title="Srdce – Czech" lang="cs" hreflang="cs" data-title="Srdce" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cbk-zam mw-list-item"><a href="https://cbk-zam.wikipedia.org/wiki/Corazon" title="Corazon – Chavacano" lang="cbk" hreflang="cbk" data-title="Corazon" data-language-autonym="Chavacano de Zamboanga" data-language-local-name="Chavacano" class="interlanguage-link-target"><span>Chavacano de Zamboanga</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Moyo" title="Moyo – Shona" lang="sn" hreflang="sn" data-title="Moyo" data-language-autonym="ChiShona" data-language-local-name="Shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Core" title="Core – Corsican" lang="co" hreflang="co" data-title="Core" data-language-autonym="Corsu" data-language-local-name="Corsican" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Calon" title="Calon – Welsh" lang="cy" hreflang="cy" data-title="Calon" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Hjerte" title="Hjerte – Danish" lang="da" hreflang="da" data-title="Hjerte" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-se mw-list-item"><a href="https://se.wikipedia.org/wiki/V%C3%A1ibmu" title="Váibmu – Northern Sami" lang="se" hreflang="se" data-title="Váibmu" data-language-autonym="Davvisámegiella" data-language-local-name="Northern Sami" class="interlanguage-link-target"><span>Davvisámegiella</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Herz" title="Herz – German" lang="de" hreflang="de" data-title="Herz" data-language-autonym="Deutsch" data-language-local-name="German" 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%B0" title="ހިތް – Divehi" lang="dv" hreflang="dv" data-title="ހިތް" 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%BCda" title="Süda – Estonian" lang="et" hreflang="et" data-title="Süda" data-language-autonym="Eesti" data-language-local-name="Estonian" 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%9A%CE%B1%CF%81%CE%B4%CE%B9%CE%AC" title="Καρδιά – Greek" lang="el" hreflang="el" data-title="Καρδιά" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/C%C3%B4r" title="Côr – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="Côr" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target"><span>Emiliàn e rumagnòl</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://en.wikipedia.org/wiki/Heart" title="Heart – English" lang="en" hreflang="en" data-title="Heart" data-language-autonym="English" data-language-local-name="English" 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/Coraz%C3%B3n" title="Corazón – Spanish" lang="es" hreflang="es" data-title="Corazón" 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/Koro" title="Koro – Esperanto" lang="eo" hreflang="eo" data-title="Koro" 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/Bihotz" title="Bihotz – Basque" lang="eu" hreflang="eu" data-title="Bihotz" 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%82%D9%84%D8%A8" title="قلب – Persian" lang="fa" hreflang="fa" data-title="قلب" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Dil" title="Dil – Fiji Hindi" lang="hif" hreflang="hif" data-title="Dil" data-language-autonym="Fiji Hindi" data-language-local-name="Fiji Hindi" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Hjarta" title="Hjarta – Faroese" lang="fo" hreflang="fo" data-title="Hjarta" data-language-autonym="Føroyskt" data-language-local-name="Faroese" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/C%C5%93ur" title="Cœur – French" lang="fr" hreflang="fr" data-title="Cœur" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Hert" title="Hert – Western Frisian" lang="fy" hreflang="fy" data-title="Hert" data-language-autonym="Frysk" data-language-local-name="Western Frisian" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Cro%C3%AD" title="Croí – Irish" lang="ga" hreflang="ga" data-title="Croí" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Cridhe" title="Cridhe – Scottish Gaelic" lang="gd" hreflang="gd" data-title="Cridhe" data-language-autonym="Gàidhlig" data-language-local-name="Scottish Gaelic" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://gl.wikipedia.org/wiki/Coraz%C3%B3n" title="Corazón – Galician" lang="gl" hreflang="gl" data-title="Corazón" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-inh mw-list-item"><a href="https://inh.wikipedia.org/wiki/%D0%94%D0%BE%D0%B3" title="Дог – Ingush" lang="inh" hreflang="inh" data-title="Дог" data-language-autonym="ГӀалгӀай" data-language-local-name="Ingush" class="interlanguage-link-target"><span>ГӀалгӀай</span></a></li><li class="interlanguage-link interwiki-gom mw-list-item"><a href="https://gom.wikipedia.org/wiki/%E0%A4%95%E0%A4%BE%E0%A4%B3%E0%A5%80%E0%A4%9C" title="काळीज – Goan Konkani" lang="gom" hreflang="gom" data-title="काळीज" data-language-autonym="गोंयची कोंकणी / Gõychi Konknni" data-language-local-name="Goan Konkani" class="interlanguage-link-target"><span>गोंयची कोंकणी / Gõychi Konknni</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/S%C3%AEm-chhong" title="Sîm-chhong – Hakka Chinese" lang="hak" hreflang="hak" data-title="Sîm-chhong" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka Chinese" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%97%D2%AF%D1%80%D0%BA%D0%BD" title="Зүркн – Kalmyk" lang="xal" hreflang="xal" data-title="Зүркн" data-language-autonym="Хальмг" data-language-local-name="Kalmyk" class="interlanguage-link-target"><span>Хальмг</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" title="심장 – Korean" lang="ko" hreflang="ko" data-title="심장" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Zuciya" title="Zuciya – Hausa" lang="ha" hreflang="ha" data-title="Zuciya" data-language-autonym="Hausa" data-language-local-name="Hausa" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8D%D5%AB%D6%80%D5%BF" title="Սիրտ – Armenian" lang="hy" hreflang="hy" data-title="Սիրտ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" 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%AF" title="हृदय – Hindi" lang="hi" hreflang="hi" data-title="हृदय" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Srce" title="Srce – Croatian" lang="hr" hreflang="hr" data-title="Srce" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Kordio" title="Kordio – Ido" lang="io" hreflang="io" data-title="Kordio" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Puso" title="Puso – Iloko" lang="ilo" hreflang="ilo" data-title="Puso" data-language-autonym="Ilokano" data-language-local-name="Iloko" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Jantung" title="Jantung – Indonesian" lang="id" hreflang="id" data-title="Jantung" 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-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Corde" title="Corde – Interlingua" lang="ia" hreflang="ia" data-title="Corde" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Cordie" title="Cordie – Interlingue" lang="ie" hreflang="ie" data-title="Cordie" data-language-autonym="Interlingue" data-language-local-name="Interlingue" class="interlanguage-link-target"><span>Interlingue</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Intliziyo" title="Intliziyo – Xhosa" lang="xh" hreflang="xh" data-title="Intliziyo" data-language-autonym="IsiXhosa" data-language-local-name="Xhosa" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Hjarta" title="Hjarta – Icelandic" lang="is" hreflang="is" data-title="Hjarta" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Cuore" title="Cuore – Italian" lang="it" hreflang="it" data-title="Cuore" data-language-autonym="Italiano" data-language-local-name="Italian" 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%9C%D7%91" title="לב – Hebrew" lang="he" hreflang="he" data-title="לב" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Jantung" title="Jantung – Javanese" lang="jv" hreflang="jv" data-title="Jantung" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/Cal%C9%A9m_f%C9%A9%C9%A3a_(C%C5%93ur)" title="Calɩm fɩɣa (Cœur) – Kabiye" lang="kbp" hreflang="kbp" data-title="Calɩm fɩɣa (Cœur)" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B9%E0%B3%83%E0%B2%A6%E0%B2%AF" title="ಹೃದಯ – Kannada" lang="kn" hreflang="kn" data-title="ಹೃದಯ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-pam mw-list-item"><a href="https://pam.wikipedia.org/wiki/Pusu" title="Pusu – Pampanga" lang="pam" hreflang="pam" data-title="Pusu" data-language-autonym="Kapampangan" data-language-local-name="Pampanga" class="interlanguage-link-target"><span>Kapampangan</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%92%E1%83%A3%E1%83%9A%E1%83%98" title="გული – Georgian" lang="ka" hreflang="ka" data-title="გული" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D8%AF%D9%90%D9%84_(%D8%AC%D9%90%D8%B3%D9%85%D8%A3%D9%86%D8%A0_%D8%A7%D9%86%D9%9B%DA%AF)" title="دِل (جِسمأنؠ انٛگ) – Kashmiri" lang="ks" hreflang="ks" data-title="دِل (جِسمأنؠ انٛگ)" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="Kashmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</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" title="Жүрек – Kazakh" lang="kk" hreflang="kk" data-title="Жүрек" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Kolon" title="Kolon – Cornish" lang="kw" hreflang="kw" data-title="Kolon" data-language-autonym="Kernowek" data-language-local-name="Cornish" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-rw mw-list-item"><a href="https://rw.wikipedia.org/wiki/Umutima" title="Umutima – Kinyarwanda" lang="rw" hreflang="rw" data-title="Umutima" data-language-autonym="Ikinyarwanda" data-language-local-name="Kinyarwanda" class="interlanguage-link-target"><span>Ikinyarwanda</span></a></li><li class="interlanguage-link interwiki-rn mw-list-item"><a href="https://rn.wikipedia.org/wiki/UMUTIMA" title="UMUTIMA – Rundi" lang="rn" hreflang="rn" data-title="UMUTIMA" data-language-autonym="Ikirundi" data-language-local-name="Rundi" class="interlanguage-link-target"><span>Ikirundi</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Moyo" title="Moyo – Swahili" lang="sw" hreflang="sw" data-title="Moyo" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%A1%D1%8C%D3%A7%D0%BB%D3%A7%D0%BC" title="Сьӧлӧм – Komi" lang="kv" hreflang="kv" data-title="Сьӧлӧм" data-language-autonym="Коми" data-language-local-name="Komi" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/K%C3%A8" title="Kè – Haitian Creole" lang="ht" hreflang="ht" data-title="Kè" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haitian Creole" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/Tch%C3%B2" title="Tchò – Guianan Creole" lang="gcr" hreflang="gcr" data-title="Tchò" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%96%D2%AF%D1%80%D3%A9%D0%BA" title="Жүрөк – Kyrgyz" lang="ky" hreflang="ky" data-title="Жүрөк" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%99%D3%93%D0%BD%D0%B3" title="Йӓнг – Western Mari" lang="mrj" hreflang="mrj" data-title="Йӓнг" data-language-autonym="Кырык мары" data-language-local-name="Western Mari" class="interlanguage-link-target"><span>Кырык мары</span></a></li><li class="interlanguage-link interwiki-lbe mw-list-item"><a href="https://lbe.wikipedia.org/wiki/%D0%9A%D1%8A%D1%8E%D0%BA%D3%80" title="КъюкӀ – Lak" lang="lbe" hreflang="lbe" data-title="КъюкӀ" data-language-autonym="Лакку" data-language-local-name="Lak" class="interlanguage-link-target"><span>Лакку</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BB%83%E0%BA%88" title="ໃຈ – Lao" lang="lo" hreflang="lo" data-title="ໃຈ" data-language-autonym="ລາວ" data-language-local-name="Lao" class="interlanguage-link-target"><span>ລາວ</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Cor" title="Cor – Latin" lang="la" hreflang="la" data-title="Cor" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://lv.wikipedia.org/wiki/Sirds" title="Sirds – Latvian" lang="lv" hreflang="lv" data-title="Sirds" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/H%C3%A4erz" title="Häerz – Luxembourgish" lang="lb" hreflang="lb" data-title="Häerz" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/%C5%A0irdis" title="Širdis – Lithuanian" lang="lt" hreflang="lt" data-title="Širdis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" 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/Hert" title="Hert – Limburgish" lang="li" hreflang="li" data-title="Hert" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Mot%C3%A9ma" title="Motéma – Lingala" lang="ln" hreflang="ln" data-title="Motéma" data-language-autonym="Lingála" data-language-local-name="Lingala" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Cor" title="Cor – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Cor" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/risna" title="risna – Lojban" lang="jbo" hreflang="jbo" data-title="risna" data-language-autonym="La .lojban." data-language-local-name="Lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Coeur" title="Coeur – Lombard" lang="lmo" hreflang="lmo" data-title="Coeur" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Sz%C3%ADv" title="Szív – Hungarian" lang="hu" hreflang="hu" data-title="Szív" data-language-autonym="Magyar" data-language-local-name="Hungarian" 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" title="Срце – Macedonian" lang="mk" hreflang="mk" data-title="Срце" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Fo" title="Fo – Malagasy" lang="mg" hreflang="mg" data-title="Fo" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B9%E0%B5%83%E0%B4%A6%E0%B4%AF%E0%B4%82" title="ഹൃദയം – Malayalam" lang="ml" hreflang="ml" data-title="ഹൃദയം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mt mw-list-item"><a href="https://mt.wikipedia.org/wiki/Qalb" title="Qalb – Maltese" lang="mt" hreflang="mt" data-title="Qalb" data-language-autonym="Malti" data-language-local-name="Maltese" class="interlanguage-link-target"><span>Malti</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B9%E0%A5%83%E0%A4%A6%E0%A4%AF" title="हृदय – Marathi" lang="mr" hreflang="mr" data-title="हृदय" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%92%E1%83%A3%E1%83%A0%E1%83%98" title="გური – Mingrelian" lang="xmf" hreflang="xmf" data-title="გური" data-language-autonym="მარგალური" data-language-local-name="Mingrelian" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%82%D9%84%D8%A8" title="قلب – Egyptian Arabic" lang="arz" hreflang="arz" data-title="قلب" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Jantung" title="Jantung – Malay" lang="ms" hreflang="ms" data-title="Jantung" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mni mw-list-item"><a href="https://mni.wikipedia.org/wiki/%EA%AF%8A%EA%AF%83%EA%AF%A3%EA%AF%A2" title="ꯊꯃꯣꯢ – Manipuri" lang="mni" hreflang="mni" data-title="ꯊꯃꯣꯢ" data-language-autonym="ꯃꯤꯇꯩ ꯂꯣꯟ" data-language-local-name="Manipuri" class="interlanguage-link-target"><span>ꯃꯤꯇꯩ ꯂꯣꯟ</span></a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Jantuang" title="Jantuang – Minangkabau" lang="min" hreflang="min" data-title="Jantuang" data-language-autonym="Minangkabau" data-language-local-name="Minangkabau" class="interlanguage-link-target"><span>Minangkabau</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/S%C4%ADng-c%C3%A2ung" title="Sĭng-câung – Mindong" lang="cdo" hreflang="cdo" data-title="Sĭng-câung" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%97%D2%AF%D1%80%D1%85" title="Зүрх – Mongolian" lang="mn" hreflang="mn" data-title="Зүрх" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%94%E1%80%BE%E1%80%9C%E1%80%AF%E1%80%B6%E1%80%B8" title="နှလုံး – Burmese" lang="my" hreflang="my" data-title="နှလုံး" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Yolotl" title="Yolotl – Nahuatl" lang="nah" hreflang="nah" data-title="Yolotl" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Yalo" title="Yalo – Fijian" lang="fj" hreflang="fj" data-title="Yalo" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="Fijian" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Hart" title="Hart – Dutch" lang="nl" hreflang="nl" data-title="Hart" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%AE%E0%A5%81%E0%A4%9F%E0%A5%81" title="मुटु – Nepali" lang="ne" hreflang="ne" data-title="मुटु" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%A8%E0%A5%81%E0%A4%97%E0%A4%83" title="नुगः – Newari" lang="new" hreflang="new" data-title="नुगः" data-language-autonym="नेपाल भाषा" data-language-local-name="Newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%BF%83%E8%87%93" title="心臓 – Japanese" lang="ja" hreflang="ja" data-title="心臓" 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-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Core" title="Core – Neapolitan" lang="nap" hreflang="nap" data-title="Core" data-language-autonym="Napulitano" data-language-local-name="Neapolitan" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-nqo mw-list-item"><a href="https://nqo.wikipedia.org/wiki/%DF%9B%DF%90%DF%B2%DF%AD" title="ߛߐ߲߭ – N’Ko" lang="nqo" hreflang="nqo" data-title="ߛߐ߲߭" data-language-autonym="ߒߞߏ" data-language-local-name="N’Ko" class="interlanguage-link-target"><span>ߒߞߏ</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%94%D0%BE%D0%B3" title="Дог – Chechen" lang="ce" hreflang="ce" data-title="Дог" data-language-autonym="Нохчийн" data-language-local-name="Chechen" 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/Hjerte" title="Hjerte – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Hjerte" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian 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/Hjarte" title="Hjarte – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Hjarte" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-nrm mw-list-item"><a href="https://nrm.wikipedia.org/wiki/Tchoeu" title="Tchoeu – Norman" lang="nrf" hreflang="nrf" data-title="Tchoeu" data-language-autonym="Nouormand" data-language-local-name="Norman" class="interlanguage-link-target"><span>Nouormand</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/C%C3%B2r" title="Còr – Occitan" lang="oc" hreflang="oc" data-title="Còr" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-mhr mw-list-item"><a href="https://mhr.wikipedia.org/wiki/%D0%A8%D3%B1%D0%BC" title="Шӱм – Eastern Mari" lang="mhr" hreflang="mhr" data-title="Шӱм" data-language-autonym="Олык марий" data-language-local-name="Eastern Mari" class="interlanguage-link-target"><span>Олык марий</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%B9%E0%AD%83%E0%AC%A4%E0%AD%8D%E2%80%8C%E0%AC%AA%E0%AC%BF%E0%AC%A3%E0%AD%8D%E0%AC%A1" title="ହୃତ୍‌ପିଣ୍ଡ – Odia" lang="or" hreflang="or" data-title="ହୃତ୍‌ପିଣ୍ଡ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Odia" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Onnee" title="Onnee – Oromo" lang="om" hreflang="om" data-title="Onnee" data-language-autonym="Oromoo" data-language-local-name="Oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Yurak" title="Yurak – Uzbek" lang="uz" hreflang="uz" data-title="Yurak" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%A6%E0%A8%BF%E0%A8%B2" title="ਦਿਲ – Punjabi" lang="pa" hreflang="pa" data-title="ਦਿਲ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pag mw-list-item"><a href="https://pag.wikipedia.org/wiki/Puso" title="Puso – Pangasinan" lang="pag" hreflang="pag" data-title="Puso" data-language-autonym="Pangasinan" data-language-local-name="Pangasinan" class="interlanguage-link-target"><span>Pangasinan</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%AF%D9%84" title="دل – Western Punjabi" lang="pnb" hreflang="pnb" data-title="دل" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%B2%DA%93%D9%87" title="زړه – Pashto" lang="ps" hreflang="ps" data-title="زړه" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Cheur" title="Cheur – Piedmontese" lang="pms" hreflang="pms" data-title="Cheur" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Hart" title="Hart – Low German" lang="nds" hreflang="nds" data-title="Hart" data-language-autonym="Plattdüütsch" data-language-local-name="Low German" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Serce" title="Serce – Polish" lang="pl" hreflang="pl" data-title="Serce" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://pt.wikipedia.org/wiki/Cora%C3%A7%C3%A3o" title="Coração – Portuguese" lang="pt" hreflang="pt" data-title="Coração" 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/Inim%C4%83" title="Inimă – Romanian" lang="ro" hreflang="ro" data-title="Inimă" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Sunqu" title="Sunqu – Quechua" lang="qu" hreflang="qu" data-title="Sunqu" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A1%D0%B5%D1%80%D0%B4%D1%86%D0%B5" title="Сердце – Rusyn" lang="rue" hreflang="rue" data-title="Сердце" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D1%80%D0%B4%D1%86%D0%B5" title="Сердце – Russian" lang="ru" hreflang="ru" data-title="Сердце" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A1%D2%AF%D1%80%D1%8D%D1%85" title="Сүрэх – Yakut" lang="sah" hreflang="sah" data-title="Сүрэх" data-language-autonym="Саха тыла" data-language-local-name="Yakut" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-szy mw-list-item"><a href="https://szy.wikipedia.org/wiki/Balucu" title="Balucu – Sakizaya" lang="szy" hreflang="szy" data-title="Balucu" data-language-autonym="Sakizaya" data-language-local-name="Sakizaya" class="interlanguage-link-target"><span>Sakizaya</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%B9%E0%A5%83%E0%A4%A6%E0%A4%AF%E0%A4%AE%E0%A5%8D" title="हृदयम् – Sanskrit" lang="sa" hreflang="sa" data-title="हृदयम्" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskrit" class="interlanguage-link-target"><span>संस्कृतम्</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%A8%E1%B1%A4%E1%B1%AB%E1%B1%9F%E1%B1%B9%E1%B1%AD" title="ᱨᱤᱫᱟᱹᱭ – Santali" lang="sat" hreflang="sat" data-title="ᱨᱤᱫᱟᱹᱭ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="Santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Coru" title="Coru – Sardinian" lang="sc" hreflang="sc" data-title="Coru" data-language-autonym="Sardu" data-language-local-name="Sardinian" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Hert" title="Hert – Scots" lang="sco" hreflang="sco" data-title="Hert" data-language-autonym="Scots" data-language-local-name="Scots" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-trv mw-list-item"><a href="https://trv.wikipedia.org/wiki/Hengac" title="Hengac – Taroko" lang="trv" hreflang="trv" data-title="Hengac" data-language-autonym="Seediq" data-language-local-name="Taroko" class="interlanguage-link-target"><span>Seediq</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Zemra" title="Zemra – Albanian" lang="sq" hreflang="sq" data-title="Zemra" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Cori" title="Cori – Sicilian" lang="scn" hreflang="scn" data-title="Cori" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%84%E0%B7%98%E0%B6%AF%E0%B6%BA" title="හෘදය – Sinhala" lang="si" hreflang="si" data-title="හෘදය" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%AF%D9%84" title="دل – Sindhi" lang="sd" hreflang="sd" data-title="دل" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Srdce_(org%C3%A1n)" title="Srdce (orgán) – Slovak" lang="sk" hreflang="sk" data-title="Srdce (orgán)" data-language-autonym="Slovenčina" data-language-local-name="Slovak" 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/Srce" title="Srce – Slovenian" lang="sl" hreflang="sl" data-title="Srce" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/Sierce" title="Sierce – Silesian" lang="szl" hreflang="szl" data-title="Sierce" data-language-autonym="Ślůnski" data-language-local-name="Silesian" class="interlanguage-link-target"><span>Ślůnski</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Wadno" title="Wadno – Somali" lang="so" hreflang="so" data-title="Wadno" data-language-autonym="Soomaaliga" data-language-local-name="Somali" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%AF%DA%B5" title="دڵ – Central Kurdish" lang="ckb" hreflang="ckb" data-title="دڵ" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" 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%86%D0%B5" title="Срце – Serbian" lang="sr" hreflang="sr" data-title="Срце" 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/Srce" title="Srce – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Srce" 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-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Jantung" title="Jantung – Sundanese" lang="su" hreflang="su" data-title="Jantung" data-language-autonym="Sunda" data-language-local-name="Sundanese" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Syd%C3%A4n" title="Sydän – Finnish" lang="fi" hreflang="fi" data-title="Sydän" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv badge-Q17559452 badge-recommendedarticle mw-list-item" title="recommended article"><a href="https://sv.wikipedia.org/wiki/Hj%C3%A4rta" title="Hjärta – Swedish" lang="sv" hreflang="sv" data-title="Hjärta" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Puso_(anatomiya)" title="Puso (anatomiya) – Tagalog" lang="tl" hreflang="tl" data-title="Puso (anatomiya)" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</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%AE%E0%AF%8D" title="இதயம் – Tamil" lang="ta" hreflang="ta" data-title="இதயம்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-shi mw-list-item"><a href="https://shi.wikipedia.org/wiki/Ul" title="Ul – Tachelhit" lang="shi" hreflang="shi" data-title="Ul" data-language-autonym="Taclḥit" data-language-local-name="Tachelhit" class="interlanguage-link-target"><span>Taclḥit</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Ul" title="Ul – Kabyle" lang="kab" hreflang="kab" data-title="Ul" data-language-autonym="Taqbaylit" data-language-local-name="Kabyle" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%99%D3%A9%D1%80%D3%99%D0%BA" title="Йөрәк – Tatar" lang="tt" hreflang="tt" data-title="Йөрәк" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%97%E0%B1%81%E0%B0%82%E0%B0%A1%E0%B1%86" title="గుండె – Telugu" lang="te" hreflang="te" data-title="గుండె" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AB%E0%B8%B1%E0%B8%A7%E0%B9%83%E0%B8%88" title="หัวใจ – Thai" lang="th" hreflang="th" data-title="หัวใจ" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-ti mw-list-item"><a href="https://ti.wikipedia.org/wiki/%E1%88%8D%E1%89%A2" title="ልቢ – Tigrinya" lang="ti" hreflang="ti" data-title="ልቢ" data-language-autonym="ትግርኛ" data-language-local-name="Tigrinya" class="interlanguage-link-target"><span>ትግርኛ</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%94%D0%B8%D0%BB" title="Дил – Tajik" lang="tg" hreflang="tg" data-title="Дил" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kalp" title="Kalp – Turkish" lang="tr" hreflang="tr" data-title="Kalp" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tw mw-list-item"><a href="https://tw.wikipedia.org/wiki/Akoma" title="Akoma – Twi" lang="tw" hreflang="tw" data-title="Akoma" data-language-autonym="Twi" data-language-local-name="Twi" class="interlanguage-link-target"><span>Twi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%B5%D1%80%D1%86%D0%B5" title="Серце – Ukrainian" lang="uk" hreflang="uk" data-title="Серце" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%82%D9%84%D8%A8" title="قلب – Urdu" lang="ur" hreflang="ur" data-title="قلب" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D9%8A%DB%88%D8%B1%DB%95%D9%83" title="يۈرەك – Uyghur" lang="ug" hreflang="ug" data-title="يۈرەك" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="Uyghur" class="interlanguage-link-target"><span>ئۇيغۇرچە / Uyghurche</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Simdaeuz" title="Simdaeuz – Zhuang" lang="za" hreflang="za" data-title="Simdaeuz" data-language-autonym="Vahcuengh" data-language-local-name="Zhuang" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Cuor" title="Cuor – Venetian" lang="vec" hreflang="vec" data-title="Cuor" data-language-autonym="Vèneto" data-language-local-name="Venetian" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/S%C3%BCd%C3%A4ikera" title="Südäikera – Veps" lang="vep" hreflang="vep" data-title="Südäikera" data-language-autonym="Vepsän kel’" data-language-local-name="Veps" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Tim" title="Tim – Vietnamese" lang="vi" hreflang="vi" data-title="Tim" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vo mw-list-item"><a href="https://vo.wikipedia.org/wiki/Lad" title="Lad – Volapük" lang="vo" hreflang="vo" data-title="Lad" data-language-autonym="Volapük" data-language-local-name="Volapük" class="interlanguage-link-target"><span>Volapük</span></a></li><li class="interlanguage-link interwiki-fiu-vro mw-list-item"><a href="https://fiu-vro.wikipedia.org/wiki/S%C3%BC%C3%A4" title="Süä – Võro" lang="vro" hreflang="vro" data-title="Süä" data-language-autonym="Võro" data-language-local-name="Võro" class="interlanguage-link-target"><span>Võro</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Cour_(antomeye)" title="Cour (antomeye) – Walloon" lang="wa" hreflang="wa" data-title="Cour (antomeye)" data-language-autonym="Walon" data-language-local-name="Walloon" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Erte" title="Erte – West Flemish" lang="vls" hreflang="vls" data-title="Erte" data-language-autonym="West-Vlams" data-language-local-name="West Flemish" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Kasingkasing" title="Kasingkasing – Waray" lang="war" hreflang="war" data-title="Kasingkasing" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%BF%83" title="心 – Wu" lang="wuu" hreflang="wuu" data-title="心" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</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%A5" title="הארץ – Yiddish" lang="yi" hreflang="yi" data-title="הארץ" data-language-autonym="ייִדיש" data-language-local-name="Yiddish" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/%E1%BB%8Ck%C3%A0n" title="Ọkàn – Yoruba" lang="yo" hreflang="yo" data-title="Ọkàn" data-language-autonym="Yorùbá" data-language-local-name="Yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%BF%83" title="心 – Cantonese" lang="yue" hreflang="yue" data-title="心" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Qelb" title="Qelb – Dimli" lang="diq" hreflang="diq" data-title="Qelb" data-language-autonym="Zazaki" data-language-local-name="Dimli" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/%C5%A0%C4%97rd%C4%97s" title="Šėrdės – Samogitian" lang="sgs" hreflang="sgs" data-title="Šėrdės" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%BF%83%E8%87%9F" title="心臟 – Chinese" lang="zh" hreflang="zh" data-title="心臟" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-ann mw-list-item"><a href="https://ann.wikipedia.org/wiki/Ejit" title="Ejit – Obolo" lang="ann" hreflang="ann" data-title="Ejit" data-language-autonym="Obolo" data-language-local-name="Obolo" class="interlanguage-link-target"><span>Obolo</span></a></li><li class="interlanguage-link interwiki-bdr mw-list-item"><a href="https://bdr.wikipedia.org/wiki/Jantung" title="Jantung – West Coast Bajau" lang="bdr" hreflang="bdr" data-title="Jantung" data-language-autonym="Bajau Sama" data-language-local-name="West Coast Bajau" class="interlanguage-link-target"><span>Bajau Sama</span></a></li><li class="interlanguage-link interwiki-bew mw-list-item"><a href="https://bew.wikipedia.org/wiki/Jantung" title="Jantung – Betawi" lang="bew" hreflang="bew" data-title="Jantung" data-language-autonym="Betawi" data-language-local-name="Betawi" class="interlanguage-link-target"><span>Betawi</span></a></li><li class="interlanguage-link interwiki-btm mw-list-item"><a href="https://btm.wikipedia.org/wiki/Taroktok" title="Taroktok – 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data-mw-deduplicate="TemplateStyles:r9671799">.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 is about the muscle. For the band, see <a href="/wiki/Heart_(band)" title="Heart (band)">Heart (band)</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Heart_anterior_exterior_view.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Heart_anterior_exterior_view.jpg/220px-Heart_anterior_exterior_view.jpg" decoding="async" width="220" height="201" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Heart_anterior_exterior_view.jpg/330px-Heart_anterior_exterior_view.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Heart_anterior_exterior_view.jpg/440px-Heart_anterior_exterior_view.jpg 2x" data-file-width="1400" data-file-height="1280" /></a><figcaption>The heart</figcaption></figure> <p>The <b>heart</b> is an <a href="/wiki/Organ_(anatomy)" class="mw-redirect" title="Organ (anatomy)">organ</a> found in every <a href="/wiki/Vertebrate" title="Vertebrate">vertebrate</a>. It is a very strong muscle. It is on the left side of the body in humans and is about the size of a fist. It pumps <a href="/wiki/Blood" title="Blood">blood</a> throughout the <a href="/wiki/Body" title="Body">body</a>. It has regular <b>contractions</b>, or when the heart squeezes the blood out into other parts of the body. </p><p><i>Cardiac</i> and <i>cardio</i> both mean "about the heart", so if something has the <a href="/wiki/Prefix" title="Prefix">prefix</a> <i>cardio</i> or <i>cardiac</i>, it has something to do with the heart. </p><p><a href="/wiki/Myocardium" class="mw-redirect" title="Myocardium">Myocardium</a> means the heart muscle: 'myo' is from the <a href="/wiki/Ancient_Greek_language" class="mw-redirect" title="Ancient Greek language">Greek</a> word for muscle - 'mys', cardium is from the <a href="/wiki/Greek_language" title="Greek language">Greek</a> word for heart - 'kardia'. </p> <meta property="mw:PageProp/toc" /> <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=Heart&veaction=edit&section=1" title="Change section: Structure" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Heart&action=edit&section=1" title="Edit section's source code: Structure"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The human heart has four <a href="https://simple.wiktionary.org/wiki/chamber" class="extiw" title="wikt:chamber">chambers</a> or closed spaces. Some animals have only two or three chambers. </p> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Diagram_of_the_human_heart_(cropped).svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Diagram_of_the_human_heart_%28cropped%29.svg/300px-Diagram_of_the_human_heart_%28cropped%29.svg.png" decoding="async" width="300" height="295" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Diagram_of_the_human_heart_%28cropped%29.svg/450px-Diagram_of_the_human_heart_%28cropped%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Diagram_of_the_human_heart_%28cropped%29.svg/600px-Diagram_of_the_human_heart_%28cropped%29.svg.png 2x" data-file-width="663" data-file-height="651" /></a><figcaption>Heart structure: Arrows show the direction of blood flow.</figcaption></figure> <p>In humans, the four chambers are two <i>atria</i> and two <i>ventricles</i>. Atria is talking about two chambers; atrium is talking about one chamber. There is a right atrium and right ventricle. These get blood that comes to the heart. They pump this blood to the <a href="/wiki/Lung" title="Lung">lungs</a>. In the lungs blood picks up <a href="/wiki/Oxygen" title="Oxygen">oxygen</a> and drops <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a>. Blood from the lungs goes to the left atrium and ventricle. The left atrium and ventricle send the blood out to the body. The left ventricle works six times harder than the right ventricle because it carries oxygenated blood.<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> </p><p>Blood is carried in <a href="/wiki/Blood_vessel" title="Blood vessel">blood vessels</a>. These are <a href="/wiki/Artery" title="Artery">arteries</a> and <a href="/wiki/Vein" title="Vein">veins</a>. Blood going to the heart is carried in veins. Blood going away from the heart is carried in arteries. The main artery going out of the right ventricle is the <i>pulmonary artery</i>. (Pulmonary means about lungs.) The main artery going out of the left ventricle is the <i>aorta</i>. </p><p>The veins going into the right atrium are the <i>superior vena cava</i> and <i>inferior vena cava</i>. These bring blood from the body to the right heart. The veins going into the left atrium are the <i>pulmonary veins</i>. These bring blood from the lungs to the left heart. </p><p>When the blood goes from the atria to the ventricles it goes through heart <i>valves</i>. When blood goes out of the ventricles it goes through valves. The valves make sure that blood only goes one way in or out. </p><p>The four valves of the heart are: </p> <ul><li>Atria to ventricle valves <ul><li><i>Tricuspid valve</i> – blood goes from right atrium to right ventricle</li> <li><i>Mitral valve</i> – blood goes from left atrium to left ventricle</li></ul></li> <li>Ventricles to arteries <ul><li><i>Pulmonic valve</i> – blood goes out of the right ventricle to the lungs (through the <i>pulmonic artery</i>)</li> <li><i>Aortic valve</i> – blood goes out of the left ventricle to the body (through the <i>aorta</i>)</li></ul></li></ul> <p>The heart has three layers. The outer covering is the <a href="/wiki/Pericardium" title="Pericardium">pericardium</a>. This is a tough sack that surrounds the heart. The middle layer is the <a href="/wiki/Myocardium" class="mw-redirect" title="Myocardium">myocardium</a>. This is the heart muscle. The inner layer is the <a href="/wiki/Endocardium" title="Endocardium">endocardium</a>. This is the thin smooth lining of the chambers of the heart.<sup id="cite_ref-CNX2014_2-0" class="reference"><a href="#cite_note-CNX2014-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Cardiac_cycle">Cardiac cycle</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Heart&veaction=edit&section=2" title="Change section: Cardiac cycle" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Heart&action=edit&section=2" title="Edit section's source code: Cardiac cycle"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Latidos.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Latidos.gif/220px-Latidos.gif" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/2/21/Latidos.gif 1.5x" data-file-width="300" data-file-height="300" /></a><figcaption><a href="/wiki/Blood" title="Blood">Blood</a> flow through the <a href="/wiki/Heart_valve" title="Heart valve">heart valves</a></figcaption></figure> <p>A <i>heart beat</i> is when the heart muscle <i>contracts</i>. This means the heart pushes in and this makes the chambers smaller. This pushes blood out of the heart and into the blood vessels. After the heart contracts and pushes in, the muscle <i>relaxes</i> or stops pushing in. The chambers get bigger and blood coming back to the heart fills them. </p><p>When the heart muscle contracts (pushes in) it is called <i><a href="/wiki/Systole_(medicine)" class="mw-redirect" title="Systole (medicine)">systole</a></i>. When the heart muscle relaxes (stops pushing in), this is called <i><a href="/wiki/Diastole" title="Diastole">diastole</a></i>. Both atria do systole together. Both ventricles do systole together. But the atria do systole <i>before</i> the ventricles. Even though the <i>atrial systole</i> comes before <i>ventricular systole</i>, all four chambers do diastole at the same time. This is called <i>cardiac diastole</i> </p><p>The order is: atrial systole → ventricular systole → cardiac diastole. When this happens one time, it is called a <i>cardiac cycle</i>. </p> <div class="mw-heading mw-heading2"><h2 id="Heart's_pacemaker"><span id="Heart.27s_pacemaker"></span>Heart's pacemaker</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Heart&veaction=edit&section=3" title="Change section: Heart's pacemaker" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Heart&action=edit&section=3" title="Edit section's source code: Heart's pacemaker"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Systole (when the heart squeezes) happens because the muscle <a href="/wiki/Cell" title="Cell">cells</a> of the heart gets smaller in size. When they get smaller we also say they <i>contract</i>. <a href="/wiki/Electricity" title="Electricity">Electricity</a> going through the heart makes the cells contract. The electricity starts in the <i>sino-atrial node</i> (<a href="/wiki/Acronym" title="Acronym">acronym</a> SA Node) The SA Node is a group of cells called pacemaker cells in the right atria. These cells start an <i>electrical impulse</i>. This electrical impulse sets the rate and timing at which all cardiac muscle cells contract. This motion is called 'atrial systole'. Once electrical impulse goes through the <i>atrio-ventricular node</i> (AV Node). The AV Node makes the impulse slow down. Slowing down makes the electrical impulses get to the ventricles later. That is what makes the ventricular systole occur <i>after</i> atrial systole, and lets all the blood leave the atria before ventricle contracts (<i>meaning squeeze</i>). </p><p>After the electrical impulse goes through the AV Node, the electrical impulse will go through the <i>conduction system</i> of the ventricle. <a href="/wiki/Conduction" title="Conduction">Conduction</a> means <a href="/wiki/Heat" title="Heat">heat</a> or electricity traveling through something. This brings the electrical impulse to the ventricles. The first part of the conduction system is the <i>bundle of His</i>. <i>His</i> is named for the doctor (Wilhelm His, Jr) who discovered it. Bundle means strings or wires grouped together in parallel. Once the bundle (<i>meaning a group of strings or wires going in parallel directions</i>) goes through the ventricle muscle, it divides into two <i>bundle branches</i>, the left bundle branch and the right bundle branch. The left bundle branch travels to the left ventricle and the right bundle branch travels to the right ventricle. At the end of the bundle branches, the electrical impulse goes into the ventricular muscle through the <a href="/w/index.php?title=Purkinje_Fibers&action=edit&redlink=1" class="new" title="Purkinje Fibers (not yet started)">Purkinje Fibers</a>. This is what makes ventricle contraction take place and makes ventricular systole. </p><p>The order is: Sino-Atrial Node → Atria (systole) → Atrio-Ventricular Node → Bundle of His → Bundle branches → <a href="/w/index.php?title=Purkinje_Fibers&action=edit&redlink=1" class="new" title="Purkinje Fibers (not yet started)">Purkinje Fibers</a> → Ventricles (systole) </p> <div class="mw-heading mw-heading2"><h2 id="ECG">ECG</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Heart&veaction=edit&section=4" title="Change section: ECG" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Heart&action=edit&section=4" title="Edit section's source code: ECG"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>ECG is an <a href="/wiki/Acronym" title="Acronym">acronym</a> for <b>E</b>lectro<b>C</b>ardio<b>G</b>ram. It is also written EKG for <b>E</b>lectro<b>K</b>ardio<b>G</b>ram in <a href="/wiki/German_language" title="German language">German</a>. The ECG shows what the electricity in the heart is doing. An ECG is done by putting <a href="/wiki/Electrode" title="Electrode">electrodes</a> on a person's skin. The electrodes see the electricity going through the heart. This is written on paper by a <a href="/wiki/Machine" title="Machine">machine</a>. This writing on the paper is the ECG. </p><p><a href="/wiki/Medical_doctor" class="mw-redirect" title="Medical doctor">Doctors</a> learn about the person's heart by looking at the ECG. The ECG shows some diseases of the heart like <a href="/wiki/Heart_attack" class="mw-redirect" title="Heart attack">heart attacks</a> or problems with the <i>rhythm</i> of the heart (how the electricity goes through the heart's conduction system.) </p> <figure typeof="mw:File/Thumb"><a href="/wiki/File:EKG_complex.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/78/EKG_complex.png/275px-EKG_complex.png" decoding="async" width="275" height="157" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/7/78/EKG_complex.png 1.5x" data-file-width="300" data-file-height="171" /></a><figcaption>ECG - electrocardiogram</figcaption></figure> <p>The ECG shows atrial systole. This is called a <b>P-wave</b>. Then ventricular systole happens. This is called the <b>QRS</b> or QRS-complex. It is called a complex because there are three different waves in it. The Q-wave, R-wave, and S-wave. Then the ECG shows ventricular diastole. This is called the <b>T-wave</b>. Atrial diastole happens then too. But it is not seen separate from ventricular diastole. </p><p>The <b>PR-Interval</b> is the space between atrial systole (P) and ventricular systole (QRS). The <b>QT-Interval</b> is from when the QRS starts to when the T ends. The <b>ST-segment</b> is the space between the QRS and T. </p> <figure typeof="mw:File/Thumb"><a href="/wiki/File:EKGI.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/EKGI.png/550px-EKGI.png" decoding="async" width="550" height="77" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/9/9b/EKGI.png 1.5x" data-file-width="710" data-file-height="100" /></a><figcaption>ECG "Rhythm Strip" - Each QRS is one heart beat</figcaption></figure> <div style="clear:both;" class=""></div> <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=Heart&veaction=edit&section=5" title="Change section: References" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Heart&action=edit&section=5" title="Edit section's source code: References"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.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"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r9724332">.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 id="CITEREFPhibbs2007" class="citation book cs1">Phibbs, Brendan (2007). <a rel="nofollow" class="external text" href="https://archive.org/details/humanheartbasicg0002phib"><i>The human heart: a basic guide to heart disease</i></a> (2nd ed.). Philadelphia: Lippincott Williams & Wilkins. p. <a rel="nofollow" class="external text" href="https://archive.org/details/humanheartbasicg0002phib/page/1">1</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780781767774" title="Special:BookSources/9780781767774"><bdi>9780781767774</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+human+heart%3A+a+basic+guide+to+heart+disease&rft.place=Philadelphia&rft.pages=1&rft.edition=2nd&rft.pub=Lippincott+Williams+%26+Wilkins&rft.date=2007&rft.isbn=9780781767774&rft.aulast=Phibbs&rft.aufirst=Brendan&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fhumanheartbasicg0002phib&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHeart" class="Z3988"></span></span> </li> <li id="cite_note-CNX2014-2"><span class="mw-cite-backlink"><a href="#cite_ref-CNX2014_2-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332" /><cite id="CITEREFBetts2013" class="citation book cs1">Betts, J. Gordon (2013). <a rel="nofollow" class="external text" href="http://cnx.org/content/m46676/latest/?collection=col11496/latest"><i>Anatomy & physiology</i></a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1938168130" title="Special:BookSources/978-1938168130"><bdi>978-1938168130</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">11 August</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Anatomy+%26+physiology&rft.date=2013&rft.isbn=978-1938168130&rft.aulast=Betts&rft.aufirst=J.+Gordon&rft_id=http%3A%2F%2Fcnx.org%2Fcontent%2Fm46676%2Flatest%2F%3Fcollection%3Dcol11496%2Flatest&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHeart" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Other_websites">Other websites</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Heart&veaction=edit&section=6" title="Change section: Other websites" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Heart&action=edit&section=6" title="Edit section's source code: Other websites"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9671870">.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:r9671876">@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:r8662964">.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"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/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/commons/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <i><b><a href="https://commons.wikimedia.org/wiki/Category:Heart_(organ)" class="extiw" title="commons:Category:Heart (organ)"><span style="">Heart (organ)</span></a></b></i>.</div></div> </div> <ul><li>Symptoms of <a rel="nofollow" class="external text" href="http://www.thehealthsite.com/diseases-conditions/heart-disease/001/">heart disease</a></li> <li><a rel="nofollow" class="external text" href="http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_pumping.html">What is the heart?</a> - NIH</li> <li><a rel="nofollow" class="external text" href="http://cardiac-output.info">The gross physiology of the cardiovascular system (2nd Ed., 2012)</a> – Robert M. 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