Question

value: 20

a motor unit is made of many neurons and many muscle fibers.

true
false

Explanation:

Define a motor unit

A motor unit is defined as a single somatic motor neuron and all of the individual muscle fibers it innervates.

Analyze the neuron count

The statement claims a motor unit is made of "many neurons." This is incorrect because a single motor unit always contains exactly one motor neuron.

Analyze the muscle fiber count

While a single motor unit does contain multiple muscle fibers (ranging from a few for fine control to hundreds for gross movement), the requirement of having only one neuron makes the overall statement false.

Answer:

• True
• False (Correct answer)