Question

if the brain sends a message to the muscles of the hand to move away from the hot stove, the ______ neurons are working.

options:

• autonomic
• afferent
• efferent
• sensory

Explanation:

Efferent neurons (motor neurons) carry signals from the brain (CNS) to effectors (muscles) to produce a response (moving hand from hot stove). Autonomic controls involuntary functions, afferent carries sensory info to CNS, and "sensory" (typo, should be "sensory" neurons which are afferent) carry info to CNS, not from CNS to muscles.

Answer:

C. efferent