University of Phoenix NSCI 280 Week 4 Quiz

Jun 28th, 2016
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Week Four Quiz Chapter 9 Muscular System: Histology and Physiology________________________________________ 1. Which of the following is NOT a function of skeletal muscle? a. body movement b. maintenance of posture c. respiration d. constriction of organs e. production of heat 2. Which of the following is true? a. Skeletal muscle is capable of spontaneous contraction. b. Smooth muscle is found in the walls of hollow organs. c. Cardiac muscle cells have multiple nuclei. d. Smooth muscle cells are long and cylindrical. e. There is a small amount of smooth muscle in the heart. 3. Which type of muscle tissue has cells that branch? a. skeletal muscle b. smooth muscle c. cardiac muscle d. both skeletal and cardiac muscle e. both cardiac and smooth muscle 4. Hypertrophy of skeletal muscles from weight lifting is caused by an increase in the a. number of muscle fibers. b. size of muscle fibers. c. number of striations. d. number of nuclei within the muscle fibers. e. nu

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University of Phoenix NSCI 280 Week 4 QuizWeek Four QuizChapter 9 Muscular System: Histology andPhysiology________________________________________1. Which of the following is NOT a function of skeletal muscle?a. body movementb. maintenance of posturec. respirationd. constriction of organse. production of heat2. Which of the following is true?a. Skeletal muscle is capable of spontaneous contraction.b. Smooth muscle is found in the walls of hollow organs.c. Cardiac muscle cells have multiple nuclei.d. Smooth muscle cells are long and cylindrical.e. There is a small amount of smooth muscle in the heart.3. Which type of muscle tissue has cells that branch?a. skeletal muscleb. smooth musclec. cardiac muscled. both skeletal and cardiac musclee. both cardiac and smooth muscle4. Hypertrophy of skeletal muscles from weight lifting is caused by an increase in thea. number of muscle fibers.b. size of muscle fibers.c. number of striations.d. number of nuclei within the muscle fibers.e. number of muscle cells.5. Actin myofilamentsa. resemble bundles of minute golf clubs.b. contain both myosin and tropomyosin.c. are held in place by the M line.d. contain strands of fibrous actin.e. are the thickest proteins in muscle.6. When an action potential reaches the presynaptic terminal,a. calcium ions diffuse into the presynaptic terminal through voltage-gated ion channels.b. acetylcholine moves into the presynaptic terminal.c. a local potential is generated i

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