AskDefine | Define receptor

Dictionary Definition

receptor

Noun

1 a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response
2 an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation [syn: sense organ, sensory receptor] [ant: effector]

User Contributed Dictionary

English

Etymology

From receptour or receptor.

Pronunciation

/ɹɪˈsɛptə/

Noun

  1. In the context of "biochemistry|medicine": A structure on a cell wall that binds with specific molecules so that they can be absorbed into the cell in order to control certain functions.
    • 2001: In the target organ, the drug is recognised by ‘receptors’. These are large molecules, usually proteins, to which the drug binds tightly and with a high degree of specificity. — Leslie Iversen, Drugs: A Very Short Introduction (Oxford 2001, p. 24)
  2. Any specialized cell or structure that responds to sensory stimuli.

Related terms

Translations

a structure on a cell wall that responds to sensory stimuli
any specialized cell or structure that responds to sensory stimuli

Extensive Definition

Receptor may refer to:
  • Sensory receptor, in physiology, any structure which, on receiving environmental stimuli, produces an informative nerve impulse
  • Receptor (biochemistry), in biochemistry, a protein molecule that receives and responds to a neurotransmitter, or other substance
  • Receptor (immunology), a molecule on the surface of an immunocyte which binds its ligand
receptor in Arabic: مستقبل
receptor in French: Récepteur
receptor in Lithuanian: Receptorius
receptor in Occitan (post 1500): Receptor
receptor in Romanian: Receptor
receptor in Slovenian: Receptor
receptor in Finnish: Reseptori
Privacy Policy, About Us, Terms and Conditions, Contact Us
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2
Material from Wikipedia, Wiktionary, Dict
Valid HTML 4.01 Strict, Valid CSS Level 2.1