(a) ACh antagonist.
(b) dopamine antagonist.
(c) ACh agonist.
(d) dopamine agonist.
Botox injections smooth facial wrinkles because botulin is a(n):?
A Acetylcholine antagonist. Botulinum toxin blocks the motor nerve's ability to release this neurotransmitter (that transmits nerve signals to muscles) and flaccid paralysis occurs.
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