BK Channels (Big Potassium Channels)

BK channels, or Big Potassium channels, are specialized proteins found in cell membranes that help regulate the flow of potassium ions. They play a crucial role in various physiological processes, such as controlling muscle contractions and nerve signaling. When the cell is stimulated, these channels open, allowing potassium ions to flow out. This outflow helps to stabilize the electrical activity of the cell and can influence heart rhythm, blood pressure, and neuronal communication. Essentially, BK channels help maintain the balance of electrical signals in the body, which is vital for proper function.