Choose the Correct Statement Regarding Motor Units

Multiple Choice

Choose the correct statement regarding motor units.

A) Muscle fibers of each motor unit are not mingled with those of other motor units.
B) During a sustained contraction, all motor units are activated simultaneously.
C) A motor neuron may control only two or three muscle fibers of the eye muscle(s) .
D) When muscles contract for sustained periods, maximal tension is maintained.
E) Most motor neurons control fewer than five muscle fibers.