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What Happens When an Action Potential Arrives at an Axon

Question 30

Multiple Choice

What happens when an action potential arrives at an axon terminal?  


A) Membrane voltages stimulate the axon.
B) Sodium ions are pumped out of the cell.
C) A neurotransmitter builds up so it can be used again.
D) The action potential causes an influx of phosphorous ions.
E) Chemicals relay the message at a synapse.

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