______ neurons ____ from brain/CNS to muscles. Pick the best completion.

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Multiple Choice

______ neurons ____ from brain/CNS to muscles. Pick the best completion.

Signals that control muscles come from the brain and spinal cord and travel outward to effectors; these are efferent neurons because they exit the central nervous system. The direction matters: efferent neurons carry commands from the CNS to muscles, enabling movement, so exiting is the correct verb. Afferent neurons do the opposite, bringing sensory information from the body into the CNS, which would be arriving. The other terms describe broader pathways rather than the specific neuron type and direction, so they don’t fit the completion.

Signals that control muscles come from the brain and spinal cord and travel outward to effectors; these are efferent neurons because they exit the central nervous system. The direction matters: efferent neurons carry commands from the CNS to muscles, enabling movement, so exiting is the correct verb. Afferent neurons do the opposite, bringing sensory information from the body into the CNS, which would be arriving. The other terms describe broader pathways rather than the specific neuron type and direction, so they don’t fit the completion.

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