Activity of the Neurotransmitter Acetylcholine Is Brief Because It

question 9

Multiple Choice

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.