Nitric oxide signaling

Nitric oxide signaling is a process where a small molecule called nitric oxide (NO) acts as a messenger in the body. It is produced by cells and diffuses easily to nearby cells, where it triggers changes by activating specific enzymes. This signaling plays a key role in relaxing blood vessels, which increases blood flow, and in communication within the nervous system. Because it moves quickly and travels short distances, nitric oxide helps regulate functions like blood pressure, immune responses, and nerve signals efficiently and precisely.