Chapter 10 Practice Questions

An increase hypertrophy or decrease atrophy in muscle

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10) An increase (hypertrophy) or decrease (atrophy) in muscle size is due to: A) increased or decreased numbers of muscle cells. B) increased or decreased deposition of adipose tissue. C) increased or decreased numbers of myofibrils and organelles. D) both A and C. Answer: C Topic: SKELETAL MUSCLE TISSUE 11) The skeletal muscle fibers that fatigue most easily are: 2
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12) Compared to skeletal muscle, cardiac muscle differs in that it: 13) The two types of smooth muscle are: 14) As skeletal muscle ages, after age 30, which of the following does not occur? A) decrease in maximal strength B) decrease in the relative number of slow fibers C) replacement of muscle by fat D) slowing of muscle reflexes Answer: B Topic: AGING AND MUSCLE TISSUE 15) A patient suffering from Osteoporosis may worsen her condition with increased muscle activity. What is a logical explanation for this phenomenon? 16) Neurotransmitter receptors are found where on the sarcolemma? 17) Which is a correct statement? 3
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18) The protein has direct contact with actin in a muscle in the resting state , while the ______ protein has direct contact with actin in a muscle in the contracting state . A) tropomyosin; myosin B) myosin; troponin C) titan; tropomyosin D) troponin; myomesin Answer: A Topic: MUSCLE PROTEINS
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