What happens when an action potential reaches the axon terminal?

Answer and explanation

Correct answer: B. Calcium enters and vesicles release neurotransmitter

  1. Step 1: Calcium entry triggers exocytosis of neurotransmitter into the synaptic cleft.
Answer
Calcium enters and vesicles release neurotransmitter.
Why not the others: The other events do not occur at the axon terminal.

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