Q:

Which statement about the sympathetic and/or parasympathetic divisions is correct?

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Which statement about the sympathetic and/or parasympathetic divisions is correct?


  1. All sympathetic neurons release ACh as a neurotransmitter.
  2. Sympathetic division fi bres emerge from brain & sacral spinal cord.
  3. Parasympathetic division stimulates adrenal gland to release norepinephrine & epinephrine.
  4. Some organs are innervated by both sympathetic division and parasympathetic division.

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D: Indeed, some organs (e.g. heart) are innervated by both divisions. In choices A, B, replace “sympathetic” with parasympathetic, and in choice C replace “parasympathetic” with sympathetic, to get a true statement.

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