The motor neuron and all the muscle fibers it innervates is called a ______.
A)motor junction.
B)motor unit.
C)motor end plate.
D)motor nerve.

Name: The motor neuron and all the muscle fibers it innervates is called a ______. A)motor junction. B)motor unit. C)motor end plate. D)motor nerve.
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Question

Quizplus · Accepted Answer

A motor unit is composed of a single motor neuron and all the muscle fibers it stimulates. This unit works together to contract a muscle. Therefore, B is the correct answer.

The Motor Neuron and All the Muscle Fibers It Innervates