14
QuizMultiple Choice

The Human Body: Part One — Test

Question 14 • Biology

When Brian touches a hot object, which body structures help him react appropriately to protect himself?

Answer
A
the sensory neurons, the brain, and the motor neurons
B
the vertebral column, the interneurons, and the motor neurons
C
the sensory neurons, the interneurons, and the motor neurons
D
the sensory neurons, the vertebral column, and the brain

Explanation

Touching a hot object triggers a reflex: sensory neurons carry the signal from the skin, interneurons process it in the spinal cord, and motor neurons signal the muscles to pull away. The vertebral column protects the spinal cord but does not transmit the response, so the correct choice is the sensory neurons, interneurons, and motor neurons.

AI-written and checked against the verified answer.

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