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In parasympathetic nervous system which of the following is released?
Options
(a) epinephrine
(b) norepinephrine
(c) serotonin
(d) acetylcholine
Correct Answer:
acetylcholine
Explanation:
The parasympathetic nervous system acts by relesing a chemical substance,acetylcholine,at the terminal endings of the postganglionic parasympathetic fibres.The latter are,thus,cholinergic.All the preganglionic nerve fibres of both these systems are cholinergic.
