Action Potential Phases

Flashcards covering the different phases of an action potential and their key characteristics.

Resting Phase

The phase where the neuron is at its resting membrane potential.

Depolarization Phase

The phase where the membrane potential becomes more positive due to Na+ ions moving into the cell.

Repolarization Phase

The phase where the membrane potential returns to its resting value due to K+ ions leaving the cell.

Hyperpolarization Phase

The phase where the membrane potential becomes more negative than the resting potential.

Return to Resting

Leakage channels help bring charge back to resting. Na+/K+ pump helps return ions to their original position

Threshold

The membrane potential at which an action potential is triggered.