voltage-gated channels

Voltage-gated channels are specialized proteins in cell membranes that open or close in response to changes in electrical voltage across the membrane. When a cell is stimulated, a small voltage change can cause these channels to open, allowing charged particles (ions) to flow in or out. This movement of ions is crucial for various processes, such as sending signals in nerve cells, triggering muscle contractions, and maintaining the cell's electrical balance. Essentially, they act like gates that control the flow of electricity in the body, playing a vital role in communication between cells.