When your hand touches a hot object,how does the message to quickly remove your hand travel?
A) across a neuron in the brain to an afferent neuron in the muscles
B) across an efferent neuron from the hand to the brain to a neuron in the brain to an afferent neuron from the brain to the muscles
C) across an afferent neuron from the hand to the spinal cord to an interneuron in the spinal cord to an efferent neuron from the spinal cord to the muscles
D) across an interneuron in the hand to another interneuron in the muscles

Question

Quizplus · Accepted Answer

When the hand touches a hot object, the message travels across an afferent neuron from the hand to the spinal cord. Then it passes to an interneuron in the spinal cord, and finally to an efferent neuron from the spinal cord to the muscles, causing an immediate reflex action of quickly removing the hand from the hot object. Option C describes this process accurately. Therefore, option C is the best choice.

When Your Hand Touches a Hot Object,how Does the Message