In Which of the Following Would the Motor Units Have

Question

In which of the following would the motor units have the fewest muscle fibers?
A) muscles of the neck
B) postural muscles of the back
C) muscles that control the eyes
D) thigh muscles
E) calf muscles

Accepted Answer

The muscles that control the eyes require very precise and accurate movements, which is why they have the fewest muscle fibers per motor unit. This allows for fine control of eye movements. The other muscle groups listed typically require more force and therefore have more muscle fibers per motor unit.