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13 Nov 2019
27. Which of the following is the same as a synaptic cleft? a. Synaptic gap b. Space between adjacent neurons c. Space at a neuromuscular junction d. Space across which neurotransmitters must diffuse e. all of the above 28. Which are the reservoirs that store the calcium required for muscle contraction? a. Peroxisomes b. Mitochondria c. Terminal cisternae d. Synaptic vesicles e. Synaptic clefts 29. The calcium ions involved in skeletal muscle contraction bind to a subunit to begin the process of muscle contraction. a. myosin b. actin c. tropomyosin d. elastin e. troponin 30. Which of the proteins of a muscle fiber is thin and contains the active sites to which the heads of the thick filaments will bind? a. Actin b. Troponin c. Tropomyosin d. Myosin e. Sarcoplasm 31. The cell membrane of a muscle fiber is called a. Sarcoplasmic reticulum b. Sarcolemma c. Neurolemmocytes d. Terminal cisternae e. Actin 32. One motor unit consists of 1. a single motor neuron. 2. at least one neuromuscular junction. 3. all the muscle fibers communicating with one neuron. 4. several motor neurons. 5. all the muscle fibers making up the whole biceps. a. 1, 2,5 b. 1,2, 3 c. 2,3, 4 d. 1, 5 e. All of the above
27. Which of the following is the same as a synaptic cleft? a. Synaptic gap b. Space between adjacent neurons c. Space at a neuromuscular junction d. Space across which neurotransmitters must diffuse e. all of the above 28. Which are the reservoirs that store the calcium required for muscle contraction? a. Peroxisomes b. Mitochondria c. Terminal cisternae d. Synaptic vesicles e. Synaptic clefts 29. The calcium ions involved in skeletal muscle contraction bind to a subunit to begin the process of muscle contraction. a. myosin b. actin c. tropomyosin d. elastin e. troponin 30. Which of the proteins of a muscle fiber is thin and contains the active sites to which the heads of the thick filaments will bind? a. Actin b. Troponin c. Tropomyosin d. Myosin e. Sarcoplasm 31. The cell membrane of a muscle fiber is called a. Sarcoplasmic reticulum b. Sarcolemma c. Neurolemmocytes d. Terminal cisternae e. Actin 32. One motor unit consists of 1. a single motor neuron. 2. at least one neuromuscular junction. 3. all the muscle fibers communicating with one neuron. 4. several motor neurons. 5. all the muscle fibers making up the whole biceps. a. 1, 2,5 b. 1,2, 3 c. 2,3, 4 d. 1, 5 e. All of the above
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