Explain the role of receptors as drug targets.

(N/A) Receptors are proteins that are crucial to the body's communication process.
Receptor proteins are embedded in the cell membrane in such a way that their small part possessing an active site projects out of the surface of the membrane and opens on the outside region of the cell membrane.
In the body,messages between two neurons and between neurons and muscles are communicated through certain chemicals. These chemicals,known as chemical messengers,are received at the binding sites of receptor proteins.