Muscles used for activities that require fine motor control, such as holding and writing with a pencil, have
A) many neuromuscular junctions.
B) motor units consisting of only a few muscle cells.
C) access to large amounts of ATP.
D) motor units consisting of many muscle cells.

Question

Quizplus · Accepted Answer

Muscles involved in fine motor control, like those used for writing, have motor units consisting of only a few muscle cells. This allows for precise control and delicate movements, as each motor neuron controls only a small number of muscle fibers, enabling finer, more controlled movements.

Muscles Used for Activities That Require Fine Motor Control, Such