MCAT Behavioral Sciences Question 2: Answer and Explanation
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Question: 2
2. Which component of the nervous system is NOT involved in the initial reflexive response to pain?
- A. Spinal cord
- B. Cerebral cortex
- C. Interneuron
- D. Motor neuron
Correct Answer: B
Explanation:
The cerebral cortex is not involved in the initial reflexive response to pain. Instead, the sensory receptors send information to the interneurons in the spinal cord, which stimulate a motor neuron to allow quick withdrawal. While the brain does ultimately get the signal, the reflexive withdrawal has already occurred by that time.