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.

---

Definitions:

Validity

The degree to which an idea, inference, or measurement is substantiated and probably accurately reflects reality.

Reliability

How much a testing tool delivers steady and dependable results throughout time.

Validity

The degree to which a notion, conclusion, or measurement is solidly based and accurately reflects reality.

Bias

A tendency to lean in a certain direction, either in favor of or against a particular thing, often in a way that is considered to be unfair.