A Motor Unit Refers to

question 166

Multiple Choice

A motor unit refers to

• A)a single motor neuron plus all of the muscle fibers it innervates
• B)a single muscle fiber plus all of the motor neurons that innervate it
• C)all of the motor neurons supplying a single muscle
• D)a pair of antagonistic muscles
• E)a sheet of smooth muscle cells connected by gap junctions

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