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HMS, BM EQ-Bank 105 MC

A tennis player executes a powerful serve. Which statement best describes the nervous system's role?

  1. Sends sensory signals to the muscles to trigger contraction
  2. Coordinates sensory input, muscle activation and balance
  3. Uses the spinal cord to plan the serve sequence
  4. Activates the parasympathetic system to raise arousal before serving
Show Answers Only

\(B\)

Show Worked Solution
  • B is correct: The nervous system integrates visual input, coordinates muscle contractions throughout the body, and maintains balance during the serve.

Other options:

  • A is incorrect: Motor neurons, not sensory neurons, carry signals to muscles.
  • C is incorrect: Movement planning occurs in the brain, mainly the frontal lobe, not the spinal cord.
  • D is incorrect: The sympathetic system raises arousal; the parasympathetic system calms the body.