Intrafusal Muscle Fibers

question 170

Multiple Choice

Intrafusal muscle fibers

• A) are supplied by alpha motor neurons
• B) are found within muscle spindles
• C) contain sensory nerve endings that are activated by stretch
• D) are supplied by alpha motor neurons and contain sensory nerve endings that are activated by stretch
• E) are found within muscle spindles and contain sensory nerve endings that are activated by stretch

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Definitions:

Vestibulocochlear Nerve

A cranial nerve that transmits sound and equilibrium (balance) information from the inner ear to the brain.

Merkel Disks

Specialized skin cells that function as mechanoreceptors, responding to light touch and pressure.

Mechanoreceptors

Sensory receptors that respond to mechanical pressure or distortion.

EEG

Electroencephalogram, a test that measures and records the electrical activity of the brain.