{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/7da62b7ed696474b8de9e3f18603d706\" frameborder=\"0\" width=\"1662\" height=\"1246\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":1246,"width":1662,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":1246,"thumbnail_width":1662,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/7da62b7ed696474b8de9e3f18603d706-9d73dbcb18931d95.gif","duration":3672.929,"title":"Anatomy of the Heart, Valves and Circulation","description":"This Loom explains the anatomy and function of the heart wall, chambers, valves, and conduction system. It reviews the epicardium, myocardium, and endocardium, plus the pericardial cavity and conditions including acute and chronic pericarditis and cardiac tamponade, with key signs like a pericardial friction rub and treatment such as pericardiocentesis. It then covers the four chambers, emphasizing that the left ventricle has the thickest wall due to higher pressure needs. The session also details the valve locations and how chordae tendineae and papillary muscles prevent backflow, and it outlines the conduction pathway from SA node to AV node, bundle branches, and Purkinje fibers with a typical SA node rate of 60 to 80 beats per minute."}