Synapses · Histology

What is the function of the enzyme Acetylcholinesterase at the synapse?

  1. Synthesizing acetylcholine from choline
  2. Transporting acetylcholine into presynaptic vesicles
  3. Breaking down acetylcholine in the synaptic cleft
  4. Acting as a postsynaptic receptor
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Correct answer: Breaking down acetylcholine in the synaptic cleft

Acetylcholinesterase is located in the synaptic cleft. It rapidly hydrolyzes acetylcholine into acetate and choline to terminate the signal and prevent constant stimulation of the postsynaptic cell.

Difficulty: Medium Question 11 of 20

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