When acetylcholine is broken down by acetylcholinesterase in the synaptic cleft, what happens to the choline?
A) It is destroyed.
B) It is made into new acetylcholinesterase.
C) It is reabsorbed at the presynaptic terminal and combined with more acetic acid to make acetylcholine.
D) It is taken up at the postsynaptic terminal.
Ans: C) It is reabsorbed at the presynaptic terminal and combined with more acetic acid to make acetylcholine.
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