ZOO 3733C Lecture Notes - Lecture 25: Ductus Arteriosus, Ligamentum Arteriosum, Chordae Tendineae
Document Summary
Shapes, layers, surfaces, and borders of the heart. Structures for bypassing fetal pulmonary circ. ductus arteriosus ligamentum arteriosum foramen ovale fossa ovalis. Chambers of the heart: left ventricle. Aortic valve (lrp cusps: right atrium. Valve of eustachius covers opening of ivc. Valve of thebesius covers opening of coronary sinus. Sa and av nodes can be seen: right ventricle. Moderator band (septomarginal trabeculae) contains right bundle branch. Pulmonary valve (lra cusps: left atrium (similar to right atrium, valve problems. Stenosis = narrowing of valve cannot open; can be caused by rheumatic fever. Incompetency (insufficiency) = cannot close: compare and contrast asd and vsd. Conducting system of the heart (helps to draw it out)} Sa node av node bundle of his bundle branches purkinje fibers. Sa (sinoatrial) node = pacemaker; 70 ipm (impulses per min. Bundle of his 25-45 ipm; part of right bundle branch passes through moderator band. Pqrst know what waves correspond to what events.
