B) 2 C) 4 D) 8 E) 9 8) Active sites on the actin become available for binding after A) binds to troponin. B) troponin to tropomyosin. C) calcium binds to troponin. D) calcium binds to tropomyosin. E) myosin binds to troponin. 9) Receptors for acetylcholine are located on the A) synaptic knob. B) motor end plate. C) sarcomere. D) synaptic cleft. E) transverse tubule. Figure 10-2 Muscle Contractions Use Figure 10-2 to answer the following questions: 10) What is the contraction in (a) called? A) complete tetanus B) incomplete tetanus C) twitch D) wave summation E) treppe 11) What is thought to happen in a muscle during the response shown in graph (a)? A) It is strengthening with exercise. B) There is a gradual increase in calcium ion concentration in the sarcoplasm. C) It is fatigued and must make repeated efforts to twitch normally. D) It is aged and has lost contractile proteins. E) It is producing more ATP as tension increases. 12) To produce a contraction similar to the one in graph (b), the muscle A) must be stimulated to the point of fatigue. B) must be stimulated again before it has relaxed from the previous stimulation. C) is excited by a stimulus of increasing intensity. D) must go through a rapid series of isolated twitches. E) generates more and more thin and thick filaments. 13) After heavy exercise, if energy reserves in a muscle are depleted, ________ occurs. A) an oxygen debt B) paralysis C) treppe D) tetanus E) atrophy 14) During the recovery period following exercise, all of the following are true except
B) 2 C) 4 D) 8 E) 9 8) Active sites on the actin become available for binding after A) binds to troponin. B) troponin to tropomyosin. C) calcium binds to troponin. D) calcium binds to tropomyosin. E) myosin binds to troponin. 9) Receptors for acetylcholine are located on the A) synaptic knob. B) motor end plate. C) sarcomere. D) synaptic cleft. E) transverse tubule. Figure 10-2 Muscle Contractions Use Figure 10-2 to answer the following questions: 10) What is the contraction in (a) called? A) complete tetanus B) incomplete tetanus C) twitch D) wave summation E) treppe 11) What is thought to happen in a muscle during the response shown in graph (a)? A) It is strengthening with exercise. B) There is a gradual increase in calcium ion concentration in the sarcoplasm. C) It is fatigued and must make repeated efforts to twitch normally. D) It is aged and has lost contractile proteins. E) It is producing more ATP as tension increases. 12) To produce a contraction similar to the one in graph (b), the muscle A) must be stimulated to the point of fatigue. B) must be stimulated again before it has relaxed from the previous stimulation. C) is excited by a stimulus of increasing intensity. D) must go through a rapid series of isolated twitches. E) generates more and more thin and thick filaments. 13) After heavy exercise, if energy reserves in a muscle are depleted, ________ occurs. A) an oxygen debt B) paralysis C) treppe D) tetanus E) atrophy 14) During the recovery period following exercise, all of the following are true except
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