Unit 3 Review - BIOL 3350 Unit 3 Review 1 Where are the...

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BIOL 3350 Unit 3 Review 1. Where are the location openings of the coronary arteries? -The root of the aorta, just above the aortic valve. 2. Describe the event that happens during ventricle systole. -Opening of the semilunar valves. 3. What is meant by ‘Preload’ work of the heart? -The amount of blood that must be pumped before systole (each heart beat). 4. Describe Pulse Pressure, and what if any type of medication might be given for elevated pulse pressure. -The term referring to any of the events related to the flow of blood pressure that occurs from the beginning of the heart beat to the beginning of the next. 5. Describe the Cardiac Cycle. -Rhythmic pumping of heart that is broken into two parts, systole (ventricle contraction) and diastole (ventricle relaxation). 6. What causes the closing of the AV valves, and what muscle(s) cause tension to better hold the valve? -The AV valvse close by the tightening of the chordae tendineae. 7. What is the subvalvular apparatice? -Both the papillary muscles at the chordae tendineae. 8. What is the arterial system, and where is the greatest pulse pressure in the arterial system? -Canals that carry blood from the heart to the organs. 9. In healthy adults, how many normal heart sounds are typically described and what are they? What causes the first heart sound and any others that exist? -Two normal heart sounds. 10. Describe the isovolumetric contraction period of the cardiac cycle. -The interval between the closing of the AV valves and the opening of the semilunar valves (aortic and pumonary valves). Ventricle pressure rises rapidly without a chance in ventricular volune. Ventricular volume does not change because all valves are closed during this phase. 11. What greek words does the term tachycardia come from? In rapid tachycardia, why does the cardiac output fall? -tachys (rapid) and kardia (of the heart)
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2 12. What factors have the largest effect on the amount of blood flow? What disease(s) might decrease blood flow? -Diameter, Radius, etc (how WIDE). 13. What is atherosclerosis and what part of the arterial system does affect? -Clogged and hardened arteris that narrow and become clogged with plaque. 14. How does atherosclerosis exert its effects? -Narrowing of the vessel lummen (ischemia), disruption of the endothelial lining, inflamation of the
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Unit 3 Review - BIOL 3350 Unit 3 Review 1 Where are the...

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