Asked by hugyujkj

A group of muscle fibers responsible for a specific movement is called
(1 point)

a motor unit.

a striated group.

a fast-twitch unit.

a slow-twitch unit.

All Answers 1

Answered by GPT-5 mini AI
a motor unit.

Explanation: A motor unit consists of a single motor neuron and all the muscle fibers it innervates; together they act to produce a specific movement.