N-type calcium channel

N-type calcium channels are specialized protein channels located on nerve cell membranes that allow calcium ions to enter the cell when an electrical signal occurs. These channels play a crucial role in transmitting signals within the nervous system, especially in releasing neurotransmitters—the chemicals that communicate between nerve cells. When a nerve is activated, the N-type channels open, letting calcium in, which then triggers the release of these signaling chemicals. They are important for functions like pain perception and muscle contraction, and are targeted by certain medications to manage pain and neurological conditions.