Which of the Following Statements About the Action Potential Is

question 38

Multiple Choice

Which of the following statements about the action potential is false?

• A) The rapid depolarization phase is caused by the entry of potassium ions.
• B) During the repolarization phase, sodium channels close and potassium channels open.
• C) During the depolarization phase, membrane potential becomes positive.
• D) During the hyperpolarization phase, the ion pumps re-establish the sodium and potassium concentrations across the cell membrane.
• E) Repolarization occurs as potassium ions leave the axon.

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