Transmitter substances
a. are expelled from the presynaptic cells by
exocytosis.
b. tend to destroy acetylcholine.
c. enter the postsynaptic cell to continue the
passage of the impulse.
d. interact with membrane receptors of the
postsynaptic cells.
e. are expelled from the presynaptic cells by
exocytosis and interact with membrane receptors
of the postsynaptic cells.
Answer: e
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