Question

question 2
norepinephrine is the neurotransmitter for:
a preganglionic sympathetic neurons
b postganglionic parasympathetic neurons
c postganglionic sympathetic neurons
d preganglionic parasympathetic neurons

Explanation:

• Preganglionic neurons (both sympathetic and parasympathetic) use acetylcholine as their neurotransmitter. So options A and D are incorrect.
• Postganglionic parasympathetic neurons use acetylcholine. So option B is incorrect.
• Postganglionic sympathetic neurons (except those innervating sweat - glands) use norepinephrine as their neurotransmitter.

Answer:

C. postganglionic sympathetic neurons