MCAT Biology Question 50: Answer and Explanation
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Question: 50
5. Which of the following accurately describes sensory neurons?
- A. Sensory neurons are afferent and enter the spinal cord on the dorsal side.
- B. Sensory neurons are efferent and enter the spinal cord on the dorsal side.
- C. Sensory neurons are afferent and enter the spinal cord on the ventral side.
- D. Sensory neurons are efferent and enter the spinal cord on the ventral side.
Correct Answer: A
Explanation:
Sensory neurons are considered afferent (carrying signals from the periphery to the central nervous system) and enter the spinal cord on the dorsal side. Motor neurons are considered efferent (carrying signals from the central nervous system to the periphery) and exit the spinal cord on the ventral side.