An action potential involves Na+ moving the cell and K+ moving the cell. a. inside; outside b.

step 1 All right, so when talking about the flow of electrical ions as an action potential moves down a

An action potential involves Na+ moving the cell and K+...

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Key Concepts

Repolarization

Repolarization is the process by which the cell's membrane potential returns to a negative value after depolarization. This phase occurs primarily through the outward movement of ions, restoring the resting state of the cell.

Depolarization

Depolarization refers to the phase in an action potential where the cell's membrane potential becomes less negative due to the rapid inward movement of positively charged ions. This shift is essential for triggering subsequent phases of the action potential.

Ion Channels

Ion channels are specialized proteins in the cell membrane that facilitate the controlled movement of ions such as sodium and potassium. They open or close in response to voltage changes, playing a crucial role in initiating and propagating action potentials.

Action Potential

An action potential is a rapid, temporary change in the electrical membrane potential of a cell caused by the influx and efflux of ions. This process is fundamental to neuronal communication and muscle contraction, allowing the signal to propagate along the cell.

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