Question

multiple choice question
which type of motor unit is more easily stimulated and, thus, is recruited first?
o small motor units (fewer muscle fibers)
o large motor units (more muscle fibers)
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Explanation:

Small motor units with fewer muscle fibers have smaller - diameter motor neurons. These neurons have lower thresholds for activation, making them more easily stimulated and recruited first during muscle activity.

Answer:

small motor units (fewer muscle fibers)