Imagine you want to produce a finely controlled movement (like picking up a wine glass by the stem). Would it be better to recruit a motor unit with a lower number of muscle fibers, or a motor unit with a higher number of muscle fibers?
A) higher
B) lower
C) either will do equally well

Question

Quizplus · Accepted Answer

Recruiting a motor unit with a lower number of muscle fibers will allow for finer control and a more precise movement. This is because the smaller motor unit will produce a smaller amount of force, allowing for more precise adjustments in movement. If a motor unit with a higher number of muscle fibers was recruited, it would produce a greater force and could result in an overcompensation or a less controlled movement.

Imagine You Want to Produce a Finely Controlled Movement (Like