effector

1. C. Sherrington term for a peripheral tissue that receives nerve impulses and reacts by contraction (muscle), secretion (gland), or a discharge of electricity (electric organ of certain bony fishes). 2. A small metabolic molecule that by combining with a repressor gene depresses the activity of an operon. 3. A small molecule that binds to a protein and, in so doing, alters the activity of that protein. 4. A substance, technique, procedure, or individual that causes an effect. [L. producer]

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ef·fec·tor i-'fek-tər, -.tȯ(ə)r n
1) a bodily organ (as a gland or muscle) that becomes active in response to stimulation
2) a molecule (as an inducer, a corepressor, or an enzyme) that activates, controls, or inactivates a process or action (as protein synthesis or the release of a second messenger)

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n.
any structure or agent that brings about activity in a muscle or gland, such as a motor nerve that causes muscular contraction or glandular secretion. The term is also used for the muscle or gland itself.

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ef·fec·tor (ə-fekґtər) 1. an agent that mediates a specific effect, e.g., an allosteric effector or an effector cell. 2. an organ that produces an effect, e.g., contraction or secretion, in response to nerve stimulation. Called also effector organ.

Medical dictionary. 2011.

Look at other dictionaries:

  • Effector — may refer to: *An actuator, in robotics * Effector (album), a music album by the Experimental Techno group Download *Effector cell, a type of lymphocyte in immunology *Effector (biology), a small molecule that binds to a macromolecule *Effector… …   Wikipedia

  • Effector — Ef*fect or, n. [L.] An effecter. Derham. [1913 Webster] …   The Collaborative International Dictionary of English

  • effector — [e fek′tər, ifek′tər] n. [L, a producer < effectus: see EFFECT] 1. a muscle, gland, cell, etc. capable of responding to a stimulus, esp. to a nerve impulse 2. that part of a nerve which transmits an impulse to an organ of response …   English World dictionary

  • Effector — efektorius statusas T sritis histologija, ląstelių chemija, histologinė chemija, audinių kultūra atitikmenys: lot. Effector ryšiai: platesnis terminas – nervinės galūnėlės siauresnis terminas – nervinė epitelinė galūnėlė siauresnis terminas –… …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Effector — efektorius statusas T sritis histologija atitikmenys: lot. Effector ryšiai: platesnis terminas – nervinės galūnės siauresnis terminas – nervinė raumeninė galūnė siauresnis terminas – nervinė sekrecinė galūnė siauresnis terminas – nervinės… …   Medicininės histologijos ir embriologijos vardynas

  • effector — adj. & n. Biol. adj. acting in response to a stimulus. n. an effector organ …   Useful english dictionary

  • effector — noun Date: 1906 1. a bodily organ (as a gland or muscle) that becomes active in response to stimulation 2. a molecule (as an inducer or a corepressor) that activates, controls, or inactivates a process or action (as protein synthesis) …   New Collegiate Dictionary

  • effector — adj. [L. efficere, to execute] A structure specialized for the activation of a particular form of response, i.e., movement or secretion …   Dictionary of invertebrate zoology

  • effector — /i fek teuhr/, n. 1. Also, effecter. a person or thing that effects. 2. Physiol. an organ or cell that carries out a response to a nerve impulse. 3. Biochem. a substance, as a hormone, that increases or decreases the activity of an enzyme. [1595… …   Universalium

  • effector — noun a) Any muscle, organ etc. that can respond to a stimulus from a nerve. b) The part of a nerve that carries a stimulus to a muscle etc. See Also: effect, effective, effectiveness, effectivity …   Wiktionary

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