{"id":1790,"date":"2020-08-17T13:27:42","date_gmt":"2020-08-17T13:27:42","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/thorax\/heart\/innervation-of-the-heart\/"},"modified":"2020-12-26T22:02:57","modified_gmt":"2020-12-26T20:02:57","slug":"innervation-of-the-heart","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/thorax\/heart\/innervation-of-the-heart\/","title":{"rendered":"Innervation of the Heart"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><div class=\"intro\">The heart is innervated by autonomic nerve fibers which arise from the&nbsp;cardiac plexus, located on the bifurcation of the trachea.<\/div><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/f\/ff\/2018_Conduction_System_of_Heart.jpg\" target=\"_blank\" title=\"Innervation of the Heart\"><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/f\/ff\/2018_Conduction_System_of_Heart.jpg\" alt=\"File:2018 Conduction System of Heart.jpg - Wikimedia Commons\"\/><\/a><figcaption><strong>Figure 1. Nerve conduction of the heart<\/strong> (Credit: OpenStax, CC BY-SA 4.0)<\/figcaption><\/figure>\n\n\n<span class=\"block-heading\" id=\"header_1\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title2\">Description<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_1\">\n\n\n<p class=\"wp-block-paragraph\">The cardiac plexus can be divided into <strong>superficial<\/strong> and <strong>deep cardiac plexus<\/strong>.<\/p>\n\n\n<\/span><span class=\"block-heading\" id=\"header_2\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title2\">Sperficial cardiac plexus<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_2\">\n\n\n<p class=\"wp-block-paragraph\">The superficial cardiac plexus resides below the arch of the aorta, in front of the&nbsp;right pulmonary artery.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is formed by the superior<strong>&nbsp;cervical cardiac branch of the left&nbsp;<\/strong><strong>sympathetic trunk<\/strong>and the<strong>&nbsp;inferior cardiac branch&nbsp;<\/strong>of the<strong>&nbsp;left&nbsp;<\/strong><strong>vagus nerve.<\/strong><\/p>\n\n\n<\/span><span class=\"block-heading\" id=\"header_3\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title2\">Deep cardiac plexus<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_3\">\n\n\n<p class=\"wp-block-paragraph\">The deep cardiac plexus is located in front of the bifurcation of the&nbsp;trachea.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Forms both the sympathetic and the parasympathetic fibers to the heart<\/li><li>Formed by the cardiac nerves derived from the&nbsp;<strong>cervical ganglia of the sympathetic trunk<\/strong>, and the c<strong>ardiac branches&nbsp;<\/strong>of the&nbsp;vagus,<strong>&nbsp;<\/strong>and&nbsp;<strong>recurrent laryngeal nerves<\/strong><\/li><li>It carries visceral afferent fibers conveying pain sensation and reflexive fibers from the heart<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Despite the innervation&nbsp;by the autonomic nervous system, the&nbsp;<strong>heart has its own intrinsic and autonomic innervation<\/strong>, this, in fact, makes heart transplantation to occur successfully because until today there is no way to connect nerves fibers to an organ.<\/p>\n\n\n<\/span><span class=\"block-heading\" id=\"header_4\">\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Origin<\/h3>\n<\/span><span class=\"block-content\" id=\"contents_4\">\n\n<\/span><span class=\"block-heading\" id=\"header_5\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title2\">Sympathetic<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_5\">\n\n\n<ul class=\"wp-block-list\"><li><strong>Superior 5-6 thoracic segments<\/strong>&nbsp;of the spinal cord give rise to the&nbsp;<strong>presynaptic fibers<\/strong><\/li><li><strong>Cervical and superior thoracic paravertebral ganglia<\/strong>&nbsp;of the&nbsp;<strong>sympathetic trunks<\/strong>&nbsp;give rise for<strong>&nbsp;postsynaptic<\/strong>&nbsp;sympathetic fibers, with cell bodies<\/li><li>The&nbsp;<strong>postsynaptic fibers<\/strong>&nbsp;cross the&nbsp;<strong>cardiopulmonary splanchnic nerves<\/strong>&nbsp;and the cardiac plexus to finally terminate in the&nbsp;<strong>SA and AV nodes<\/strong><\/li><\/ul>\n\n\n<\/span><span class=\"block-heading\" id=\"header_6\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title2\">Parasympathetic<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_6\">\n\n\n<ul class=\"wp-block-list\"><li><strong>Presynaptic fibers<\/strong>&nbsp;arise from the&nbsp;<strong>vagus<\/strong>&nbsp;nerve<\/li><li><strong>Postsynaptic<\/strong>&nbsp;parasympathetic ganglia are located within the&nbsp;<strong>atrial wall and interatrial septum<\/strong><\/li><li><strong>Postsynaptic<\/strong>&nbsp;parasympathetic ganglia are located&nbsp;<strong>near the SA and AV nodes<\/strong>&nbsp;and also at the coronary arteries<\/li><\/ul>\n<\/span><div id=\"the_titles\" style=\"display:none;\"><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Description<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Sperficial cardiac plexus<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Deep cardiac plexus<\/h4><h3 class=\"wp-block-heading\" class=\"wp-block-heading\">Origin<\/h3><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Sympathetic<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Parasympathetic<\/h4><\/div>","protected":false},"excerpt":{"rendered":"<p>Description The cardiac plexus can be divided into superficial and deep cardiac plexus. Sperficial cardiac plexus The superficial cardiac plexus resides below the arch of the aorta, in front of the&nbsp;right pulmonary artery. It is formed by the superior&nbsp;cervical cardiac branch of the left&nbsp;sympathetic trunkand the&nbsp;inferior cardiac branch&nbsp;of the&nbsp;left&nbsp;vagus nerve. Deep cardiac plexus The deep [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1773,"menu_order":10,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1790","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>Innervation of the Heart &#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\/innervation-of-the-heart\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\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\\\/innervation-of-the-heart\\\/\",\"url\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/anatomy\\\/thorax\\\/heart\\\/innervation-of-the-heart\\\/\",\"name\":\"Innervation of the Heart &#8211; 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