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QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by recruiting additional motor units O b. Only by varying the firing rate of the motor neurons O c. By varying the firing rate of the motor neurons and by recruiting additional motor units O d. By using more motor neuron pools

QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by recruiting additional motor units O b. Only by varying the firing rate of the motor neurons O c. By varying the firing rate of the motor neurons and by recruiting additional motor units O d. By using more motor neuron pools

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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H b. The smooth muscles and glands O c. Skeletal, smooth, and cardiac muscle O d. The skeletal muscles and the parts of the nervous system that control them QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by recruiting additional motor units O b. Only by varying the firing rate of the motor neurons O c. By varying the firing rate of the motor neurons and by recruiting additional motor units O d. By using more motor neuron pools esc QUESTION 9 Which is the first step in the contraction phase of the excitation-contraction coupling? a. Action potential occurs at the neuromuscular junction. Ob.Ca2+ binds to troponin. Oc. Nicotinic receptor channels in the sarcolemma open. O d. Myosin heads pivot. Click Save and Submit to save and submit. Click Save All Answers to save all answers. Type here to search 1 ? f2 (8) # * M f4 LA O 101 4 E f5 ,C n % 5 f6 10 6 17 7 &
Transcribed Image Text:H b. The smooth muscles and glands O c. Skeletal, smooth, and cardiac muscle O d. The skeletal muscles and the parts of the nervous system that control them QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by recruiting additional motor units O b. Only by varying the firing rate of the motor neurons O c. By varying the firing rate of the motor neurons and by recruiting additional motor units O d. By using more motor neuron pools esc QUESTION 9 Which is the first step in the contraction phase of the excitation-contraction coupling? a. Action potential occurs at the neuromuscular junction. Ob.Ca2+ binds to troponin. Oc. Nicotinic receptor channels in the sarcolemma open. O d. Myosin heads pivot. Click Save and Submit to save and submit. Click Save All Answers to save all answers. Type here to search 1 ? f2 (8) # * M f4 LA O 101 4 E f5 ,C n % 5 f6 10 6 17 7 &
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