Identify an accurate statement about acetylcholine.
A. Acetylcholine is released at the postganglionic nerve endings of sympathetic nerves.
B. Acetylcholine is the predominant neurotransmitter that is released during the fight or flight reaction.
C. Acetylcholine is produced in the adrenal gland.
D. Acetylcholine is released at both the ganglia and the postganglionic nerve endings of parasympathetic nerves.
Answer: D
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