Question

A motor unit is defined as an axon and all of the:_______ 1. muscle fibers that the branches contact 2. sarcomeres that its dendrites 3. contact fascicle that the branches contact.

Answer 1

Correct answer is Option 1. muscle fibers that the branches contact.

Step-by-step explanation:

A motor unit is made up a motor neuron also known as an axon and the number of muscle fibers that the branches have contact with.

Motor units function in such a way that they organise the contractions of one muscle when they receive a signal from the brain.

Motor units can come in

a. Large sizes : an example is the muscle in the limbs

b. Small sizes: an examples is the muscle in the eyes