Activity of the neurotransmitter acetylcholine is brief because it
A) is pumped out of the synaptic cleft by the sodium-potassium pump.
B) is rapidly broken down by enzymes in the synaptic cleft.
C) is transported back into the presynaptic neuron.
D) ʺself-destructsʺ shortly after leaving the presynaptic neuron.
E) diffuses out of the synaptic cleft.

Question

Quizplus · Accepted Answer

The Answer is B

Activity of the Neurotransmitter Acetylcholine Is Brief Because It