When Jon burned his finger on the stove, ___________ neurons carried the message to the spinal cord and ____________ neurons instructed the muscles in his arm to retract from the flame.
A) motor; sensory
B) inter; motor
C) afferent; efferent
D) efferent; afferent

Question

Quizplus · Accepted Answer

Afferent neurons (sensory neurons) carry messages from the periphery towards the central nervous system (CNS), such as when Jon's finger burned. Efferent neurons (motor neurons) carry messages away from the CNS, instructing muscles to respond, such as when Jon's arm retracted from the flame. Therefore, the correct answer is "afferent; efferent", which is C.

When Jon Burned His Finger on the Stove, ___________ Neurons