A Key Event for the Release of Neurotransmitter from the Presynaptic

question 76

Multiple Choice

A key event for the release of neurotransmitter from the presynaptic membrane is the

• A) hyperpolarization of the axon membrane.
• B) arrival of an action potential at the axon terminal.
• C) influx of potassium ions into the axon terminal.
• D) activation of the sodium-potassium pumps.
• E) opening of ion channels within the microtubules.

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