A motor unit
A) is usually composed of different muscle fiber types.
B) is comprised of a single motor neuron and all the muscle fibers it innervates.
C) can determine whether to contract one of its associated fibers or all of them depending on the load.
D) consists of a fascicle, a myofiber, and its myofibrils.
E) is comprised of a motor neuron and the fascicle it innervates.

Question

Quizplus · Accepted Answer

A motor unit consists of a single motor neuron and all the muscle fibers it innervates.

A Motor Unit