{"id":24967,"date":"2026-01-26T14:55:07","date_gmt":"2026-01-26T13:55:07","guid":{"rendered":"http:\/\/drclaudevaislic.com\/le-fonctionnement-du-coeur\/"},"modified":"2026-02-12T09:44:34","modified_gmt":"2026-02-12T08:44:34","slug":"how-the-heart-works","status":"publish","type":"page","link":"http:\/\/drclaudevaislic.com\/en\/how-the-heart-works\/","title":{"rendered":"How the heart works"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"24967\" class=\"elementor elementor-24967 elementor-23742\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cd6041c e-con-full e-flex e-con e-parent\" data-id=\"cd6041c\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-4b9d927 e-flex e-con-boxed e-con e-child\" data-id=\"4b9d927\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;background_motion_fx_motion_fx_scrolling&quot;:&quot;yes&quot;,&quot;background_motion_fx_devices&quot;:[&quot;desktop&quot;,&quot;laptop&quot;,&quot;tablet&quot;,&quot;mobile&quot;]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a61605e elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"a61605e\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 24 24\"><path d=\"m23,5.005s-.746-.009-1.091,0c-1.177.002-2.237.08-3.191.212-.132-.418-.302-.804-.52-1.147l1.102-1.47c.332-.442.242-1.069-.2-1.4-.441-.331-1.067-.241-1.399.2l-.953,1.271c-.509-.292-1.093-.495-1.747-.594v-1.077c0-.552-.447-1-1-1s-1,.448-1,1v1.076c-.685.099-1.304.301-1.872.564l-.796-1.194c-.306-.459-.926-.584-1.387-.277-.46.306-.584.927-.277,1.387l.77,1.155c-1.263,1.056-2.075,2.352-2.503,3.159C6.447,2.3,3.056.391,1.196.02.658-.087.135.26.023.799c-.111.539.237,1.066.774,1.181.168.035,4.005.918,4.185,5.682-1.769.983-2.983,2.965-2.983,5.248,0,5.074,4.232,9.456,10.533,10.904.545.125,1.055.188,1.535.188.609,0,1.17-.101,1.693-.303,3.112-1.206,4.739-5.54,4.738-9.198,0-2.347-.66-4.395-1.213-5.699-.143-.335-.275-.791-.1-1.053.18-.269.809-.7,2.98-.743h.832c.553,0,1-.448,1-1s-.447-1-1-1Zm-11.523,3.394c-.815-.558-1.636-.933-2.441-1.158.812-1.296,2.446-3.241,4.965-3.241,1.412,0,2.332.539,2.753,1.602-2.847.726-4.462,1.956-5.276,2.797Zm3.563,13.434c-.554.213-1.226.222-2.06.031-5.287-1.215-8.98-4.897-8.98-8.955,0-2.156,1.57-3.909,3.5-3.909.905,0,1.96.433,3.015,1.189-.051,1.024-.474,3.194-3.002,4.604-.482.269-.655.878-.386,1.36.183.329.523.513.874.513.165,0,.332-.041.486-.126,3.36-1.874,3.951-4.794,4.023-6.262,0,0,.001,0,.001-.001.014-.024,1.111-1.784,4.638-2.712-.097.525-.054,1.193.296,2.017.48,1.134,1.054,2.907,1.055,4.919,0,3.415-1.487,6.567-3.46,7.332Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2f2c28 elementor-widget elementor-widget-text-editor\" data-id=\"b2f2c28\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"\/en\/your-surgery\/\">Your Surgery<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-def43c1 elementor-widget elementor-widget-heading\" data-id=\"def43c1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">How the heart works<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e23c57c e-flex e-con-boxed e-con e-parent\" data-id=\"e23c57c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-f31c88b e-con-full e-flex e-con e-child\" data-id=\"f31c88b\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;laptop&quot;,&quot;tablet&quot;],&quot;sticky_offset&quot;:100,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b9b35ee elementor-widget elementor-widget-heading\" data-id=\"b9b35ee\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Navigation<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-745b391 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"745b391\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/how-the-heart-works\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 24 24\"><path d=\"m23,5.005s-.746-.009-1.091,0c-1.177.002-2.237.08-3.191.212-.132-.418-.302-.804-.52-1.147l1.102-1.47c.332-.442.242-1.069-.2-1.4-.441-.331-1.067-.241-1.399.2l-.953,1.271c-.509-.292-1.093-.495-1.747-.594v-1.077c0-.552-.447-1-1-1s-1,.448-1,1v1.076c-.685.099-1.304.301-1.872.564l-.796-1.194c-.306-.459-.926-.584-1.387-.277-.46.306-.584.927-.277,1.387l.77,1.155c-1.263,1.056-2.075,2.352-2.503,3.159C6.447,2.3,3.056.391,1.196.02.658-.087.135.26.023.799c-.111.539.237,1.066.774,1.181.168.035,4.005.918,4.185,5.682-1.769.983-2.983,2.965-2.983,5.248,0,5.074,4.232,9.456,10.533,10.904.545.125,1.055.188,1.535.188.609,0,1.17-.101,1.693-.303,3.112-1.206,4.739-5.54,4.738-9.198,0-2.347-.66-4.395-1.213-5.699-.143-.335-.275-.791-.1-1.053.18-.269.809-.7,2.98-.743h.832c.553,0,1-.448,1-1s-.447-1-1-1Zm-11.523,3.394c-.815-.558-1.636-.933-2.441-1.158.812-1.296,2.446-3.241,4.965-3.241,1.412,0,2.332.539,2.753,1.602-2.847.726-4.462,1.956-5.276,2.797Zm3.563,13.434c-.554.213-1.226.222-2.06.031-5.287-1.215-8.98-4.897-8.98-8.955,0-2.156,1.57-3.909,3.5-3.909.905,0,1.96.433,3.015,1.189-.051,1.024-.474,3.194-3.002,4.604-.482.269-.655.878-.386,1.36.183.329.523.513.874.513.165,0,.332-.041.486-.126,3.36-1.874,3.951-4.794,4.023-6.262,0,0,.001,0,.001-.001.014-.024,1.111-1.784,4.638-2.712-.097.525-.054,1.193.296,2.017.48,1.134,1.054,2.907,1.055,4.919,0,3.415-1.487,6.567-3.46,7.332Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">How the heart works<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/before-surgery\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" height=\"512\" viewBox=\"0 0 24 24\" width=\"512\" data-name=\"Layer 1\"><path d=\"m24 9a3 3 0 1 0 -4 2.816v4.184a6 6 0 0 1 -12 0v-.08a7.006 7.006 0 0 0 6-6.92v-4a5.006 5.006 0 0 0 -5-5 1 1 0 0 0 0 2 3 3 0 0 1 3 3v4a5 5 0 0 1 -10 0v-4a3 3 0 0 1 3-3 1 1 0 0 0 0-2 5.006 5.006 0 0 0 -5 5v4a7.006 7.006 0 0 0 6 6.92v.08a8 8 0 0 0 16 0v-4.184a3 3 0 0 0 2-2.816zm-3 1a1 1 0 1 1 1-1 1 1 0 0 1 -1 1z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Before Surgery<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/during-surgery\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"m24,12c0,.552-.447,1-1,1h-2.466c-.452,0-.849.305-.966.74l-1.677,6.242c-.191.625-.725,1.018-1.341,1.018h-.017c-.623-.007-1.155-.415-1.324-1.014l-3.274-13.226-3.178,11.239c-.191.597-.69.976-1.28.999-.612.033-1.119-.315-1.345-.862l-1.6-4.474c-.143-.396-.521-.663-.942-.663H1c-.553,0-1-.448-1-1s.447-1,1-1h2.591c1.264,0,2.398.799,2.825,1.989l.938,2.626,3.284-11.615c.201-.625.727-1.027,1.361-1,.618.011,1.146.418,1.315,1.012l3.259,13.166,1.062-3.956c.351-1.308,1.542-2.222,2.897-2.222h2.466c.553,0,1,.448,1,1Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">During Surgery<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/after-surgery\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" viewBox=\"0 0 24 24\" data-name=\"Layer 1\"><path d=\"m3.899 16.187c-2.465-2.871-3.774-5.663-3.89-8.301-.024-.552.403-1.019.955-1.043.555-.017 1.019.404 1.043.955.096 2.18 1.243 4.563 3.41 7.086.359.419.312 1.05-.107 1.41-.417.358-1.049.313-1.41-.107zm4.101 3.813h-1v-1c0-.553-.447-1-1-1s-1 .447-1 1v1h-1c-.553 0-1 .447-1 1s.447 1 1 1h1v1c0 .553.447 1 1 1s1-.447 1-1v-1h1c.553 0 1-.447 1-1s-.447-1-1-1zm-7-16h1v1c0 .552.447 1 1 1s1-.448 1-1v-1h1c.553 0 1-.448 1-1s-.447-1-1-1h-1v-1c0-.552-.447-1-1-1s-1 .448-1 1v1h-1c-.553 0-1 .448-1 1s.447 1 1 1zm22 7h-1v-1c0-.552-.447-1-1-1s-1 .448-1 1v1h-1c-.553 0-1 .448-1 1s.447 1 1 1h1v1c0 .553.447 1 1 1s1-.447 1-1v-1h1c.553 0 1-.448 1-1s-.447-1-1-1zm-11-2.5c.553 0 1-.448 1-1 0-1.311.569-2.553 1.563-3.41 1.008-.869 2.3-1.238 3.634-1.038 2.053.305 3.57 1.932 3.778 4.048.054.549.536.958 1.093.897.55-.054.951-.543.897-1.093-.294-2.998-2.545-5.396-5.474-5.832-1.895-.277-3.801.266-5.234 1.501-.496.427-.912.925-1.253 1.466-.613-.976-1.485-1.791-2.56-2.338-.49-.252-1.095-.054-1.345.438s-.054 1.094.438 1.345c1.519.773 2.462 2.311 2.462 4.014 0 .552.447 1 1 1zm5.337 7.735c-1.018 1.033-2.167 2.056-3.513 3.125-.526.419-1.157.64-1.824.64-.553 0-1 .447-1 1s.447 1 1 1c1.107 0 2.197-.381 3.068-1.073 1.41-1.12 2.618-2.196 3.694-3.289.387-.394.382-1.026-.012-1.414s-1.026-.382-1.414.012z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">After Surgery<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7dcf4b5 e-con-full e-flex e-con e-child\" data-id=\"7dcf4b5\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-575aaba elementor-widget elementor-widget-image\" data-id=\"575aaba\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"373\" src=\"http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/le-fonctionnement-du-coeur-1024x373.jpg\" class=\"attachment-large size-large wp-image-23771\" alt=\"Le fonctionnement du coeur\" srcset=\"http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/le-fonctionnement-du-coeur-1024x373.jpg 1024w, http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/le-fonctionnement-du-coeur-300x109.jpg 300w, http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/le-fonctionnement-du-coeur-768x280.jpg 768w, http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/le-fonctionnement-du-coeur-1536x560.jpg 1536w, http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/le-fonctionnement-du-coeur.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7979474 e-con-full e-flex e-con e-child\" data-id=\"7979474\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3f4ef2 elementor-widget elementor-widget-heading\" data-id=\"a3f4ef2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Coronary arteries<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-568f69d elementor-widget elementor-widget-text-editor\" data-id=\"568f69d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\n\nThe heart is a muscular contractile organ supplied with blood through vessels called coronary arteries. There are two main coronary arteries:\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-672f058 e-con-full e-flex e-con e-child\" data-id=\"672f058\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-906e481 e-con-full e-flex e-con e-child\" data-id=\"906e481\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7276305 elementor-widget elementor-widget-heading\" data-id=\"7276305\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Left coronary artery<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ada325b elementor-widget elementor-widget-text-editor\" data-id=\"ada325b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\n\nThis artery bifurcates into the anterior interventricular artery and the left circumflex artery. The anterior interventricular artery runs between the left and right ventricles. The circumflex artery, on the other hand, wraps around the heart (as its name suggests), giving rise to the obtuse marginal arteries.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8bc801a elementor-widget elementor-widget-spacer\" data-id=\"8bc801a\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd53c61 elementor-widget elementor-widget-heading\" data-id=\"fd53c61\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Right coronary artery<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c26172 elementor-widget elementor-widget-text-editor\" data-id=\"0c26172\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\n\nThis artery supplies blood to the right side of the heart.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3c706d6 e-con-full e-flex e-con e-child\" data-id=\"3c706d6\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0bb34b6 elementor-widget elementor-widget-image\" data-id=\"0bb34b6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"257\" height=\"229\" src=\"http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/arteres-coronaire.jpg\" class=\"attachment-large size-large wp-image-23802\" alt=\"Arteres coronaires\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-867aa34 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"867aa34\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a59bbf2 e-con-full e-flex e-con e-child\" data-id=\"a59bbf2\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56a4e79 elementor-widget elementor-widget-heading\" data-id=\"56a4e79\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The heart is made up of four chambers.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2214ea5 e-con-full e-flex e-con e-child\" data-id=\"2214ea5\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6f9e21b e-con-full e-flex e-con e-child\" data-id=\"6f9e21b\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dd5c945 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"dd5c945\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The right atrium receives oxygen-depleted blood, known as venous blood, from the peripheral tissues.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The right ventricle then pumps this blood towards the lungs, where it is oxygenated.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The left atrium receives red oxygen-rich blood coming from the lungs.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Finally, the left ventricle pumps the red, oxygen-rich blood back out to the peripheral tissues.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a69fe80 e-con-full e-flex e-con e-child\" data-id=\"a69fe80\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fe57c8e elementor-widget elementor-widget-image\" data-id=\"fe57c8e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"279\" height=\"258\" src=\"http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/cavites-cardiaques.jpg\" class=\"attachment-large size-large wp-image-23804\" alt=\"Cavit\u00e9s cardiaques\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a4f551 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4a4f551\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-680712d e-con-full e-flex e-con e-child\" data-id=\"680712d\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac15a87 elementor-widget elementor-widget-heading\" data-id=\"ac15a87\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Heart valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94d4350 e-con-full e-flex e-con e-child\" data-id=\"94d4350\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5acdbf1 e-con-full e-flex e-con e-child\" data-id=\"5acdbf1\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30ab442 elementor-widget elementor-widget-text-editor\" data-id=\"30ab442\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\n\nValves separate these various heart chambers to ensure that blood flows in only one direction:\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b9a8eae elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"b9a8eae\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The tricuspid valve lies between the right atrium and the right ventricle.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The pulmonary valve lies between the right ventricle and the pulmonary artery.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The mitral valve lies between the left atrium and the left ventricle.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">The aortic valve lies between the left ventricle and the aorta, which pumps blood towards the peripheral tissues.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-532107b elementor-widget elementor-widget-text-editor\" data-id=\"532107b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\n\nThe right and left heart chambers are separated by two impermeable walls: the interatrial septum and the interventricular septum.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5bcb2d7 e-con-full e-flex e-con e-child\" data-id=\"5bcb2d7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3592f3a elementor-widget elementor-widget-image\" data-id=\"3592f3a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"435\" height=\"482\" src=\"http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/valves-cardiaques.jpg\" class=\"attachment-large size-large wp-image-23800\" alt=\"Les valves cardiaques\" srcset=\"http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/valves-cardiaques.jpg 435w, http:\/\/drclaudevaislic.com\/wp-content\/uploads\/2026\/01\/valves-cardiaques-271x300.jpg 271w\" sizes=\"(max-width: 435px) 100vw, 435px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2daff8e elementor-hidden-mobile e-flex e-con-boxed e-con e-parent\" data-id=\"2daff8e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-188f9d1 e-flex e-con-boxed e-con e-child\" data-id=\"188f9d1\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5d718d8 e-con-full e-flex e-con e-child\" data-id=\"5d718d8\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3a8beb4 elementor-view-stacked elementor-position-inline-start e-transform elementor-hidden-desktop elementor-hidden-laptop elementor-hidden-tablet elementor-hidden-mobile elementor-shape-circle elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"3a8beb4\" data-element_type=\"widget\" data-settings=\"{&quot;_transform_translateX_effect_hover&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:-5,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_hover_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_hover_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_hover_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M19,11H9l3.29-3.29a1,1,0,0,0,0-1.42,1,1,0,0,0-1.41,0l-4.29,4.3A2,2,0,0,0,6,12H6a2,2,0,0,0,.59,1.4l4.29,4.3a1,1,0,1,0,1.41-1.42L9,13H19a1,1,0,0,0,0-2Z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tLe fonctionnement du coeur\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3309264 e-con-full e-flex e-con e-child\" data-id=\"3309264\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-410a5dd elementor-view-stacked elementor-position-inline-end e-transform elementor-shape-circle elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"410a5dd\" data-element_type=\"widget\" data-settings=\"{&quot;_transform_translateX_effect_hover&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:5,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_hover_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_hover_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_hover_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_hover_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<a href=\"\/en\/before-surgery\/\" class=\"elementor-icon\" tabindex=\"-1\" aria-label=\"Before Surgery\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Outline\" viewBox=\"0 0 24 24\" width=\"512\" height=\"512\"><path d=\"M18,12h0a2,2,0,0,0-.59-1.4l-4.29-4.3a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42L15,11H5a1,1,0,0,0,0,2H15l-3.29,3.29a1,1,0,0,0,1.41,1.42l4.29-4.3A2,2,0,0,0,18,12Z\"><\/path><\/svg>\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<a href=\"\/en\/before-surgery\/\" >\n\t\t\t\t\t\t\tBefore Surgery\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Your Surgery How the heart works Navigation How the heart works Before Surgery During Surgery After Surgery Coronary arteries The heart is a muscular contractile organ supplied with blood through vessels called coronary arteries. There are two main coronary arteries: Left coronary artery This artery bifurcates into the anterior interventricular artery and the left circumflex [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-24967","page","type-page","status-publish","hentry"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How the heart works - Dr Claude Vaislic<\/title>\n<meta name=\"description\" content=\"Discover how the heart works: its role, its beats and blood circulation explained simply.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/drclaudevaislic.com\/en\/how-the-heart-works\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How the heart works - 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