118exam4-spring07 - Biology 118 May 21, 2007 EXAM 4 -...

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May 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 HDL = high density lipoprotein < = less than RV = right ventricle AV = atrioventricular HP = hydrostatic pressure LDL = low density lipoprotein SA = sinoatrial node BP = blood (hydrostatic) pressure HR = heart rate OP = osmotic pressure SR = sarcoplasmic reticulum CO = cardiac output IRV = inspiratory reserve volume RA = right atrium SV = stroke volume CRP = C-reactive protein LA = left atrium RMV = respiratory minute volume TV = tidal volume ERV = expiratory reserve volume LV = left ventricle RR = respiration rate VC = vital capacity 1. The _______ is the strongest chamber of the heart because it pumps ________. a. LV - blood the longest distance b. RV - blood the longest distance c. LV - more blood per minute d. RV - more blood per minute 2. The ______ carries deoxygenated blood into the lungs. a. vena cava b. pulmonary artery c. pulmonary vein d. aorta 3. The “fibrous skeleton” of the heart separates the _______ with a layer of dense _________. a. right & left sides - connective tissue b. right & left sides - cartilage c. atria from the ventricles - connective tissue d. atria from the ventricles - cartilage 4. A heart murmur is abnormal noise produced by turbulent blood flow through the heart. It may be caused by a. an infection that damages the heart valves. b. atherosclerosis deposits on the valves. c. a birth defect in the heart. d. all of these. 5. Cardiac muscle cells contain lots of ______ & ______, so the heart is a type of “red” fiber muscle tissue. a. hemoglobin - glycogen b. myoglobin - glycogen c. myoglobin - mitochondria d. hemoglobin - mitochondria 6. Cardiac muscle tissue contracts most forcefully, in line ____ of graph C, when the sarcomeres are _____ before the contraction begins. a. a - short b. d - stretched c. d - short d. a - stretched 7. The primary pacemaker of the heart, the _______, is located in the _________. a. SA node - RA b. Purkinje fibers - LV c. AV bundle - RV d. AV node - LA 8. Which part of the heart’s “electrical system” delays the electrical signal so that the atrial contraction occurs before the ventricles contract? a.
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118exam4-spring07 - Biology 118 May 21, 2007 EXAM 4 -...

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