HLTH108 Lecture Notes - Lecture 10: Coronary Circulation, Pulmonary Vein, Pulmonary Circulation
3 Aug 2018
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27th march 2018: lecture 10 cardiovascular system: the heart: Keeps the heart in place while allowing the freedom to move. Fibrous: outer layer, tough, inelastic, dense irregular tissue = protection and anchors the heart in mediastinum. Reflected at the root of the great vessels. Layers of the heart wall: serous pericardium. Epicardium: external, thin, composed of mesothelium and ct visceral layer of. Myocardium: middle, thick, cardiac muscle (95% of the wall) Endocardium: inner, thin layer of endothelium and ct. 2 receiving chambers = atria and auricles. Anterior and posterior interventricular btw the ventricles. Receives deoxygenated blood from inferior and superior vena cava and coronary sinus. Fossa ovalis (small depression) on the interatrial septum. Interatrial septum = btw the atria (foramen ovale) The right atrioventricular orifice closed by the r atrioventricular (tricuspid valve) Pumps deoxygenated blood to the pulmonary trunk (artery) = pulmonary semilunar valve. The cusps of the tricuspid valve connected to papillary muscles.
