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Unformatted text preview: Biology 118 Nov. 23, 2005 EXAM 4 - VERSION A Mark your name, ID number & test version (A, B, C, D...) on your answer sheet. You can keep this list of exam questions. You may write on it if you wish. This form will be the only way you will know what answers you marked on the scantron. Each question has only 1 correct answer. Indicate your choice on the answer sheet - scantron. If you need clarification for a question, raise your hand & stay in your seat. I will come to you. If you are stumped by a question, place a mark by it, and return to it later. > = greater than < = less than AV = atrioventricular LDL = low density lipoprotein BP = blood (hydrostatic) pressure (mmHg) OP = osmotic pressure (mmHg) CO = cardiac output RMV = respiratory minute volume R = Resistance ERV = expiratory reserve volume RA = right atrium HDL = high density lipoprotein RR = respiration rate HP = hydrostatic pressure RV = right ventricle HR = heart rate SV = stroke volume IRV = inspiratory reserve volume TV = tidal volume LA = left atrium VC = vital capacity LV = left ventricle VO 2 max - maximum oxygen consumption 1. The coronary arteries supply oxygenated blood to the ______. These arteries are part of the _______ circuit. a. brain - pulmonary b. brain - systemic c. heart - pulmonary d. heart - systemic 2. In a normal, healthy adult, the strongest chamber of the heart is the _________. a. RA b. RV c. LA d. LV 3. Trace the (shortest) pathway of blood, after the blood exits the aorta: 1 - skeletal muscle capillaries, 2 - AV valve, 3 - RV, 4 - vena cava, 5 - RA. a. 1, 4, 5, 2, 3 b. 4, 5, 3, 2, 1 c. 1, 2, 4, 5, 3 d. 4, 1, 2, 3, 5 4. Semilunar valves open when the blood pressure in the ventricles is _________the pressure in the ____________. a. <, veins b. >, arteries c. <, arteries d. >, veins 5. Some types of heart murmurs may be caused by ________ either AV or semilunar valves. a. birth defects in b. cholesterol deposits on c. stiffening (aging) of d. all of these 6. The highest PCO 2 level is normally found in the ______. a. atmosphere b. vena cava c. pulmonary vein d. aorta 7. Cardiac muscle tissue acts as a single motor unit because of the numerous ________ that allow voltage changes to travel quickly from cell to cell. a. t-tubules b. thin filaments c. gap junctions d. stem cells 8. In graph 2, Line _______ shows the most forceful (strongest) contraction. In cardiac muscle tissue this occurs when the sarcomeres are _________....
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- Spring '08