What is the definition of a "motor unit"?
A)A single motor neuron plus all 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)All of the muscles that affect the movement of any given joint

Question

Quizplus · Accepted Answer

A motor unit is defined as a single motor neuron plus all the muscle fibers it innervates. This means that one motor unit is responsible for activating and controlling the contractions of a group of muscle fibers.

What Is the Definition of a "Motor Unit