Receptors

Receptors are specialized proteins located on the surface of cells that act as sensors for the body. They detect different signals, such as hormones, nutrients, or environmental changes, and then trigger specific responses within the cell. Think of receptors as lock-and-key mechanisms, where the key represents a signal that fits into the lock (the receptor), activating a process in the cell. This interaction is crucial for communication within the body, enabling functions such as metabolism, immune responses, and even sensation. Essentially, receptors help cells respond appropriately to the world around them.