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After the action potential passes through an axon, what restores the resting potential?

A. Gated sodium channels open and allow sodium to flow into the cell.
B. Gated potassium channels open and allow potassium ions to flow out.
C. Gated sodium channels open and allow potassium ions to flow out.
D. Gated potassium channels open and allow sodium to flow out of the cell.

Respuesta :

D! Gated potassium channels open and allow sodium to flow out of the cell.

Answer;

Gated potassium channels open and allow sodium to flow out of the cell.

Explanation;

  • Action potential refers to the electrical impulse that results from a rapid change in the cell's membrane potential.
  • The action potential depends on protein channels, such as sodium-potassium pump and potassium channels that maintain resting potential. It also depends on voltage gated K+ channels and voltage gated Na+ channels.
  • During the transmission of action potential along a neuron, when the voltage channels are closed, then the K+ leak channels and the Na+ pump are open to maintain the resting membrane potential.

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