Which of the Following Is Responsible for the Repolarization of the Membrane

question 9

Multiple Choice

Which of the following is responsible for the repolarization of the membrane after the peak of the action potential?

• A)The membrane potential reaches the Na⁺ equilibrium potential.
• B)The voltage-gated Na⁺ channels begin to inactivate.
• C)The slowly opening voltage-gated K⁺ channels allow K⁺ to enter.
• D)The influx of Na⁺ and the outflow of K⁺ are equal.
• E)There is no longer a gradient to drive K⁺ out of the cell.

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