Receptor

A receptor is a specialized molecule located on the surface or inside of cells that detects specific signals, such as chemicals, hormones, or other stimuli. When a signal binds to a receptor, it triggers a response within the cell, like activating a pathway or changing cell behavior. Think of receptors as the cell’s way of “sensing” and “responding” to its environment, helping the body coordinate functions like growth, immune response, or nerve signaling. They are crucial for communication between cells and maintaining overall health.