The motor units of the thumb,fingers,and face contain the
A) fewest muscle fibers.
B) most muscle fibers.
C) fewest motor neurons.
D) most motor neurons.
E) most extensors.

Question

Quizplus · Accepted Answer

The thumb, fingers, and face require fine motor control and precision movements, so their motor units contain the fewest muscle fibers. This allows for more precise control and finer movements.

The Motor Units of the Thumb,fingers,and Face Contain the