Receptor

Definition

Receptors are specialized proteins located on the membrane of postsynaptic neurons that bind with specific neurotransmitters. Once a neurotransmitter binds to its receptor, it triggers a series of events leading to signal transmission or modulation within the cell.

Related terms

Ligand: A ligand is any molecule, including neurotransmitters, that binds to a receptor and initiates a biological response.

Agonist:

An agonist is a substance that enhances or mimics the effects of a neurotransmitter by binding to its receptors.

Antagonist:

An antagonist is a substance that blocks or inhibits the effects of a neurotransmitter by binding to its receptors without activating them.