Intrafusal Muscle Fibers but Not Extrafusal Fibers

question 6

Multiple Choice

Intrafusal muscle fibers but not extrafusal fibers:

• A)Receive only sensory innervation.
• B)Are innervated by only one motor neuron.
• C)Contain an equatorial region with little to no contractile protein.
• D)Run the length of the muscle.

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