Homonym: Receptors (Sensors)
Receptors are specialized proteins located on the surface of cells or within them. They play a crucial role in how cells communicate with their environment by detecting specific molecules, such as hormones or neurotransmitters. When a receptor binds to its target molecule, it triggers a series of cellular responses, allowing the cell to react to changes in its surroundings.
There are various types of receptors, including G protein-coupled receptors, ion channel receptors, and enzyme-linked receptors. Each type has a unique structure and function, enabling cells to respond to a wide range of signals. This process is essential for maintaining homeostasis and regulating bodily functions.