Potassium plays an important role in nerve impulse transmission. It helps to regulate the action potential across cell membranes, which allows signals to be sent and received between neurons. This process is vital for proper communication between cells and organs in the body, as it enables messages such as movement, sensation, memory and emotion to be relayed effectively. Potassium also helps maintain a healthy balance of sodium and calcium ions within cells, which is essential for normal functioning of the nervous system. Without adequate potassium levels in the body, these functions would not occur properly and nerve impulses would not be transmitted correctly.