MUSCLE NERVE CARTILAGE BONE
GANGLIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A motor pool (as opposed to a motor unit) consists of
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all of the motor neurons that project to a given muscle.
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all of the motor neurons within a single segment of spinal cord.
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all of the motor neurons that project to a given limb.
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a single motor neuron and all of the muscles it innervates.
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Explanation:
Detailed explanation-1: -Each lower motor neuron innervates muscle fibers within a single muscle, and all the motor neurons innervating a single muscle (called the motor neuron pool for that muscle) are grouped together into rod-shaped clusters that run parallel to the long axis of the cord for one or more spinal cord segments (Figure 16.2).
Detailed explanation-2: -The motor unit: a single motor neuron and the muscle fibers that it innervates. A motor pool consists of all of the motor neurons that innervate a single muscle.
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