BIO 12 Lecture Notes - Lecture 17: Left Atrioventricular Orifice, Tricuspid Valve, Superior Vena Cava
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14 Sep 2020
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Separates the right and left atria from the right and left ventricle. Found in between the atria and ventricles. Consists of three cusp (cusp: have the ability to open and close) Prevents the backflow of the deoxygenated blood from the right ventricle to the right atrium. Lies between the right ventricle and pulmonary artery. Lies between the left ventricle and the aorta. Prevent the backflow of blood into the ventricles during relaxation; they open during the ventricular contraction. Point of maximal impulse (pmi) where you can find the loudest heartbeat. Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the ventricle is full, the tricuspid valve shuts. This prevents blood from flowing backward into the atria while the ventricle contracts.
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