118exam4-fall07 - Biology 118 Nov. 21, 2007 EXAM 4 -...

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Nov. 21, 2007 EXAM 4 - VERSION A ..) 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 ERV = expiratory reserve volume LV = left ventricle RV = right ventricle Ach = acetylcholine HDL = high density lipoprotein NE = norepinephrine RR = respiration rate AV = atrioventricular HP = hydrostatic pressure NFP = net filtration pressure SA = sinoatrial BP or HP = blood (hydrostatic) pres. HR = heart rate OP = osmotic pressure SV = stroke volume CO = cardiac output (or carbon monoxide) IRV = inspiratory reserve volume RA = right atrium TV = tidal volume CRP = C-reactive protein LA = left atrium RMV = respiratory minute volume VC = vital capacity 1. The RV is weaker than the LV because the RV _____ than the LV. a. pumps less blood b. pumps less viscous blood c. moves blood a shorter distance d. moves more blood by diffusion 2. The ______carries deoxygenated blood into the RA. a. pulmonary vein b. pulmonary artery c. aorta d. vena cava 3. Trace the shortest pathway of blood flow through these structures, after blood enters the lungs: 1 - aorta, 2 - AV valve, 3 - LA, 4 - semilunar valve, 5 - pulmonary vein, 6 - LV. a. 5, 3, 2, 6, 4, 1 b. 1, 3, 2, 6, 4, 5 c. 5, 3, 4, 6, 2, 1 d. 1, 3, 4, 6, 2, 5 4. Stenosis of an AV valve may be caused by ______ and leads to a(n) _______ flow of blood past the valve. a. atherosclerosis - increased b. atherosclerosis - decreased c. dehydration - increased d. dehydration - decreased 5. The “fibrous skeleton” of the heart holds the ____ valves in place & prevents direct electrical transmission between the _____. a. AV - right & left sides b. semiilunar - atria & ventricles c. AV & semilunar - atria & ventricles d. AV & semilunar - right & left sides 6. Cardiac muscle cells differ from skeletal muscle cells because the cardiac cells have _______ than skeletal muscle cells. a. fewer mitochondria b. more glycogen c. shorter cells d. less myoglobin 7. Cardiac muscle cells are autorhythmic because ____ “leak” into the cells & the cells form a single motor unit because they are linked by ___. a. potassium ions (K + ) - covalent bonds b. sodium ions (Na + ) - gap junctions c. chloride ions (Cl - ) - ionic bonds d. any of these ions - smooth muscle 8. The “back-up” pacemaker of the heart is the _____ node. Its primary role is to ____ the transmission of the action potential to the ventricles. a.
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This note was uploaded on 04/09/2008 for the course BIOL 118 taught by Professor Peterson during the Spring '08 term at University of Washington.

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118exam4-fall07 - Biology 118 Nov. 21, 2007 EXAM 4 -...

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