Which is TRUE about the muscle fibers found in a muscle spindle?
A)They are not true muscle fibers because they cannot contract.
B)They are innervated by alpha motor neurons.
C)They function to maintain tension on spindle receptors.
D)When stimulated to fire,they always inhibit flexor muscles muscles.
E)Their contraction is stimulated by alpha motor neurons and inhibited by gamma motor neurons.

Question

Quizplus · Accepted Answer

Muscle spindle fibers, also known as intrafusal fibers, function to maintain tension on spindle receptors and are innervated by gamma motor neurons, not alpha motor neurons.

Which Is TRUE About the Muscle Fibers Found in a Muscle