Which of the Following Is the Correct Order of Events

question 128

Multiple Choice

Which of the following is the correct order of events that occur at a cholinergic synapse? 1. Extracellular calcium enters the axon terminal, triggering the exocytosis of acetylcholine.
2) Acetylcholine is removed by acetylcholinesterase.
3) Acetylcholine binds to receptors and depolarizes the postsynaptic membrane.
4) Axon terminal depolarizes.

• A) 2, 3, 1, 4
• B) 1, 4, 3, 2
• C) 4, 1, 2, 3
• D) 3, 4, 1, 2
• E) 4, 1, 3, 2

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