The monosynaptic stretch reflex circuit consists of:
a. muscle spindle – spinal cord – alpha motor neuron – extrafusal muscle fibers.
b. spinal cord – muscle spindle – alpha motor neuron – extrafusal muscle fibers.
c. extrafusal muscle fibers – alpha motor neuron – spinal cord – muscle spindle.
d. muscle spindle – spinal cord – extrafusal muscle fibers – alpha motor neuron.
Answer: A
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