The Statement "Its Postganglionic Axons Always Use Acetylcholine as the Neurotransmitter

Question

The statement "Its postganglionic axons always use acetylcholine as the neurotransmitter" is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system.

Accepted Answer

This statement is true only for the parasympathetic nervous system, which uses acetylcholine as its neurotransmitter for both pre- and postganglionic neurons. In the sympathetic nervous system, the preganglionic neurons also use acetylcholine, but the postganglionic neurons release a variety of neurotransmitters, including norepinephrine and epinephrine. Therefore, choices B, C, D, and E are incorrect.