Postganglionic neurons of the parasympathetic nervous system primarily secrete acetylcholine, while postganglionic neurons of the sympathetic nervous system primarily secrete norepinephrine.

Question

Quizplus · Accepted Answer

This statement is true. Postganglionic neurons of the parasympathetic nervous system primarily secrete acetylcholine, while postganglionic neurons of the sympathetic nervous system primarily secrete norepinephrine, although other neurotransmitters may also be released by these neurons in some cases.

Postganglionic Neurons of the Parasympathetic Nervous System Primarily Secrete Acetylcholine