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BIO 203 Lecture 13 - March 8th BIO 203 Cardiovascular...

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March 8 th BIO 203 Cardiovascular Physiology Blood, Heart, Blood vessels Blood – hormone transport o Have plasma, mostly water, ions, proteins, o Red blood cells, platelets, white blood cells o Blood volume ~ 5 L, 3L is plasma, 2L is elements 4 valves make sure blood flows in only one direction Right AV valve tricuspid to right ventricle to pulmonary valve pulmonic semilunar to left atrium to left av valve, mitral bicuspid, to aortic valve aortic semilunar Right AV valve, has 3 different flaps, tricuspid Left AV valve Mitral valve – 2 flaps, bicuspid valve Semilunar valves closed, aortic valves are open, ensures blood only goes in one direction Left ventricle (oxygenated blood to body) more muscular than the right side, has to pump against pressure through the aortic vavle Low pressure circulation – co2 rich blood High pressure circulation – o2 rich blood Cardiac output of left side = cardiac output of right side, measured in liters/min In man CO ~ 5 L/min Beat of the Heart o Ventricular Systole – period of ventricular contraction o
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