receptor sites

Receptor sites are specific locations on the surface of cells that interact with molecules, such as hormones or neurotransmitters. When a molecule binds to a receptor site, it can trigger a response inside the cell, like signaling it to perform a specific function. Think of receptor sites as locks, while the molecules are the keys that fit into them. This interaction is crucial for various biological processes, including communication between cells, regulation of physiological functions, and the immune response. Understanding receptor sites helps us learn how medications can influence these pathways to treat diseases.