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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.

Correct Answer:

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