A single motor neuron together with all the muscle fibers it innervates is called

Answer: Motor Unit

Explanation:

Answer is a motor Unit.

A motor unit is part of the neuromuscular system that consists of a motor neuron and the skeletal muscle fibers that the axon innervates or contac. When motor units are in group they are called a motor pool and they work together. Example is the contractions of muscles, All the motor units in the muscles group together to form a motor pool and coordinate the contractions of muscles.