[Campbell Biology P.1138] What is the primary difference in neurotransmitters released by the... | Practice Question

What is the primary difference in neurotransmitters released by the postganglionic neurons of the parasympathetic and sympathetic divisions?

  • A: Parasympathetic postganglionic neurons release norepinephrine, while sympathetic postganglionic neurons release acetylcholine.
  • B: Both parasympathetic and sympathetic postganglionic neurons primarily release acetylcholine.
  • C: Parasympathetic postganglionic neurons release acetylcholine, while sympathetic postganglionic neurons primarily release norepinephrine.
  • D: Both parasympathetic and sympathetic postganglionic neurons primarily release epinephrine.

Explanation

The passage explicitly states: 'In the case of the postganglionic neurons, those of the parasympathetic division release acetylcholine, whereas nearly all their counterparts in the sympathetic division release norepinephrine.'