RT Book, Section A1 Ciccone, Charles D. A1 Bednarek, Melissa L. A1 Miller, Kenneth L. SR Print(0) ID 1188527981 T1 Pharmacodynamics: Target Tissue Receptors T2 Pharmacology in Rehabilitation, 5e YR 2022 FD 2022 PB F. A. Davis Company PP New York, NY SN 9781719645348 LK fadavisat.mhmedical.com/content.aspx?aid=1188527981 RD 2024/10/04 AB A receptor is a component on or within a cell that a substance can bind to.1 Most drugs exert their effect by binding to and activating one of these receptors.1 The receptors can be any cellular macromolecule, but many receptors have been identified as proteins or protein complexes that are located on or within the cell.1,2 When a drug binds to a receptor, it initiates a chain of biochemical events that brings about some change in the physiological function of the cell.