What is the "Group Name" for a Motor Nerve Fiber

Question

What is the "group name" for a motor nerve fiber and all the muscle fibers it stimulates?
A) motor end plate
B) myasthenia gravis
C) synaptic terminal
D) motor unit

Accepted Answer

A motor unit is composed of a motor nerve fiber and all the muscle fibers it stimulates. Therefore, D is the correct answer. A is incorrect as it refers to the specialized part of the muscle fiber where the nerve fiber synapses. B refers to an autoimmune disease that affects neuromuscular transmission. C refers to the end of the nerve fiber that releases neurotransmitters.