When an Action Potential Arrives at an Axon Terminal, It

question 66

Multiple Choice

When an action potential arrives at an axon terminal, it causes the opening of _______ channels, increasing the concentration of this ion within the cell, which ultimately triggers fusion of neurotransmitter vesicles with the cell membrane.

• A) acetylcholine
• B) sodium
• C) potassium
• D) calcium
• E) chloride

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