Exam4Practice Ch13 Reflex Ch14 CVS Ch15 Blood Ch17 Breathing

Exam4Practice Ch13 Reflex Ch14 CVS Ch15 Blood Ch17 Breathing

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1 Remember to review Powerpoint and Study Guide. I will take about 50 – 60 of the below along with a few from the Study Guide for the exam. Questions are pretty much in order through the textbook. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The effector in a reflex is the a) muscle or gland. b) sensory receptor. c) afferent neuron. d) control center. e) efferent neuron. 2) A polysynaptic reflex has at least __________ in the reflex pathway. a) two neurons b) two synapses c) one synapse d) three neurons e) B and D 3) The "normal" contractile fibers of the muscle are also called the a) muscle spindle fibers b) extrafusal fibers. c) intrafusal fibers. 4) Motor neurons are sometimes inhibited by a) joint receptors. b) muscle spindle organs. c) Golgi tendon organs. 5) The structure whose abnormal function is associated with Parkinson's disease is the a) spinal cord. b) primary motor cortex. c) basal nuclei (ganglia). d) cerebellum. e) skeletal muscle. ESSAY. Write your answer in the space provided or on a separate sheet of paper. 6) How does the stretch reflex protect a muscle? 7) Compare and contrast the structures and functions of the Golgi tendon organ and the muscle spindle. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 8) In the 16th century, William Harvey discovered evidence that a) the cardiovascular system is an open system. b) the cardiovascular system transports blood and air. c) arteries and veins are linked by capillaries. d) air is recirculated instead of consumed. e) the liver manufactures blood. 9) The most accurate definition of artery is a vessel that a) carries highly oxygenated blood. b) transports blood toward the heart. c) transports blood away from the heart. d) contains smooth muscle in its wall. e) contains internal valves. 10) Capillaries are best described as a) thin walled vessels that convey blood toward the heart. b) thin walled vessels that carry blood deficient in oxygen. c) thick walled vessels that convey blood away from the heart. d) thick walled vessels that carry blood rich in oxygen. e) microscopic vessels in which blood exchanges material with the interstitial fluid. 11) The medical term for heart attack is a) myocardial infarction. b) heart failure. c) heart murmur. d) fibrillation. e) heart block. 12) The driving force for blood flow is a(n) __________ gradient. a) volume b) osmotic c) gravity d) pressure
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2 13) Each of the following changes will result in increased blood flow to a tissue except one. Identify the exception. a) relaxation of precapillary sphincters b) increased blood pressure c) increased blood volume d) decreased vessel diameter e) decreased peripheral resistance 14) The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s) ? a) Na+ b) Ca2+ c) K+ d) A and B e) A and C
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Exam4Practice Ch13 Reflex Ch14 CVS Ch15 Blood Ch17 Breathing

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