{"id":1784,"date":"2020-08-17T13:27:42","date_gmt":"2020-08-17T13:27:42","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/thorax\/heart\/fibrous-skeleton\/"},"modified":"2020-12-31T02:05:57","modified_gmt":"2020-12-31T01:05:57","slug":"fibrous-skeleton","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/thorax\/heart\/fibrous-skeleton\/","title":{"rendered":"Fibrous skeleton"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><div class=\"intro\">The fibrous skeleton of the heart is basically the \u201chard shell\u201d of the heart, formed by the non-muscular connective tissue, consisting of collagen.<\/div><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"http:\/\/meddists.com\/wp-content\/uploads\/2018\/07\/2011_Heart_Valves.jpg\" alt=\"\" class=\"wp-image-3812\"\/><figcaption><strong>Cross-section showing all of the valves and the location of the anuli fibrosi cordis<\/strong> (Credit: OpenStax, CC BY-SA 4.0)<\/figcaption><\/figure><\/div>\n\n\n<span class=\"block-heading\" id=\"header_1\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Components<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_1\">\n\n\n<ol class=\"wp-block-list\"><li><strong>Annuli fibrosi cordis<\/strong> (fibrous rings)<\/li><li><strong>Fibrous trigones<\/strong><\/li><li><strong>Membraneous part of interventricular septa<\/strong><\/li><\/ol>\n\n\n<\/span><span class=\"block-heading\" id=\"header_2\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Functions<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_2\">\n\n\n<ol class=\"wp-block-list\"><li>Electrical insulation\u00a0between atria and ventricles<\/li><li>Attachment for the myocardium.<\/li><li>Attachment and\u00a0stabilization\u00a0of the valves<\/li><li>Keeping the\u00a0heart and valves open and functioning.<\/li><\/ol>\n\n\n<\/span><span class=\"block-heading\" id=\"header_3\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Annuli fibrosi cordis<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_3\">\n\n\n<p class=\"wp-block-paragraph\">The annuli fibrosi cordis (fibrous rings) are four collagenous rings that surround the valvular orifices of the heart. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Each ring is referred to as<strong> annulus fibrosus<\/strong> (right, left, aortic, pulmonary)<\/li><li>They are connected to each other by <strong>fibrous trigones<\/strong> (except for the pulmonary ring, which is connected to the aortic ring by the <strong>tendon of the infundibulum<\/strong>)<\/li><\/ul>\n\n\n<\/span><span class=\"block-heading\" id=\"header_4\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Fibrous trigones<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_4\">\n\n\n<ul class=\"wp-block-list\"><li>Thickened fused pieces of the annuli fibrosi cordi.<\/li><li>The bundle of His passes through the right trigone.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"http:\/\/meddists.com\/wp-content\/uploads\/2018\/09\/fibrous_skeleton_v1_1.jpg\" alt=\"\" class=\"wp-image-5299\"\/><figcaption><strong>The fibrous skeleton of the heart as\u00a0orifices<\/strong>\u00a0<\/figcaption><\/figure><\/div>\n<\/span><div id=\"the_titles\" style=\"display:none;\"><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Components<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Functions<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Annuli fibrosi cordis<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Fibrous trigones<\/h4><\/div>","protected":false},"excerpt":{"rendered":"<p>Components Annuli fibrosi cordis (fibrous rings) Fibrous trigones Membraneous part of interventricular septa Functions Electrical insulation\u00a0between atria and ventricles Attachment for the myocardium. Attachment and\u00a0stabilization\u00a0of the valves Keeping the\u00a0heart and valves open and functioning. Annuli fibrosi cordis The annuli fibrosi cordis (fibrous rings) are four collagenous rings that surround the valvular orifices of the heart. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1773,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1784","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fibrous skeleton &#8211; Meddists<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/thorax\/heart\/fibrous-skeleton\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/anatomy\\\/thorax\\\/heart\\\/fibrous-skeleton\\\/\",\"url\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/anatomy\\\/thorax\\\/heart\\\/fibrous-skeleton\\\/\",\"name\":\"Fibrous skeleton &#8211; 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