Question

which of the following statements regarding motor units and muscle control is false? when a decision is made to perform a movement, specific groups of motor neurons are stimulated. the size of a motor unit is an indication of how fine the control of movement can be. each muscle fiber experiences a range of contraction because not all of the fibers in a motor unit contract at the same time. the amount of tension produced when a skeletal muscle contracts depends on the frequency of stimulation and the number of motor units involved. i dont know yet

Explanation:

In a motor unit, all muscle fibers contract simultaneously when stimulated by the motor neuron. So the statement that each muscle fiber experiences a range of contraction because not all of the fibers in a motor unit contract at the same time is false. The other statements are correct facts about motor units and muscle control. When a movement decision is made, specific motor - neuron groups are stimulated. The size of a motor unit indicates movement control fineness, and the tension in skeletal muscle contraction depends on stimulation frequency and the number of motor units involved.

Answer:

Each muscle fiber experiences a range of contraction because not all of the fibers in a motor unit contract at the same time.