voltage-gated potassium channels

Voltage-gated potassium channels are specialized proteins embedded in cell membranes, primarily in nerve and muscle cells. They open and close in response to changes in electrical charge (voltage) across the cell membrane. When the cell's internal voltage becomes more positive during an electrical signal, these channels open, allowing potassium ions to exit the cell. This movement helps restore the cell's resting state after activation, contributing to the regulation of electrical signals (action potentials). They are essential for proper nerve signal transmission and muscle function, ensuring cells respond accurately to stimuli.