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BIO 188 Study Guide #16 CARDIOVASCULAR PHYSIOLOGY Study Questions 1. Trace blood flow in order through the major vessels and circuits. For each vessel or heart chamber, indicate whether the level of oxygenation is relatively high or low. Too much to write out . 2. What are the phases of the cardiac cycle and what happens during each? Describe the muscular, valve, fluid, and electrical activity associated with each. The cardiac cycle has two phases Systole Ventricles contract, atria relax Blood flows out of heart into pulmonary artery and aorta Mitral and tricuspid valves closed Aortic and pulmonic valves open Diastole Ventricles relax; atria contract Blood flows from atria into ventricles Mitral and tricuspid valves open Aortic and pulmonic valves closed Valve 4 valves control blood flow in the heart Aortic valve Semilunar valve (each of the three cusps shaped like a crescent moon) Controls flow from left ventricle to ascending aorta Pulmonic valve Semilunar valve Controls flow from right ventricle to pulmonary artery Mitral valve Bicuspid valve shaped like a Bishop’s mitre hat Controls flow from left atrium to left ventricle Tricuspid Controls flow from right atrium to right ventricle Electrical P wave: atrial depolarization QRS complex: ventricular depolarization T wave: ventricular repolarization 3. Given EDV, ESV, and HR, how do you calculate SV, CO, and EF? What are normal resting values for SV, CO, and EF? On average, how often does an RBC pass through the heart? SV = EDV – ESV CO = SV x HR EF = SV/EDV Normal adult blood volume = 5 L
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Normal stroke volume = 70 ml/beat Normal resting heart rate = 72 beat/min Normal EDV = ~120ml Normal ESV = ~50ml EF < .4 heart failure RBC = 5.04 L/min on average 4. Starting with the outermost, name the three types of “—cardium” and the function of each. Muscle
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This test prep was uploaded on 04/21/2008 for the course BIO 188 taught by Professor Capco during the Fall '08 term at ASU.

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