receptor

Definitions of receptor
  1. noun
    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
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    types:
    alpha receptor, alpha-adrenergic receptor, alpha-adrenoceptor
    receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)
    beta receptor, beta-adrenergic receptor, beta-adrenoceptor
    receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)
    type of:
    anatomical structure, bodily structure, body structure, complex body part, structure
    a particular complex anatomical part of a living thing
  2. noun
    an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation
    synonyms: sense organ, sensory receptor
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    Antonyms:
    effector
    an organ (a gland or muscle) that becomes active in response to nerve impulses
    types:
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    lateral line, lateral line organ
    sense organs of fish and amphibians; believed to detect pressure changes in the water
    enteroceptor, interoceptor
    any receptor that responds to stimuli inside the body
    exteroceptor
    any receptor that responds to stimuli outside the body
    pineal eye, third eye
    a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles
    baroreceptor
    a sensory receptor that responds to pressure
    chemoreceptor
    a sensory receptor that responds to chemical stimuli
    thermoreceptor
    a sensory receptor that responds to heat and cold
    eye, oculus, optic
    the organ of sight
    ear
    the sense organ for hearing and equilibrium
    organ of hearing
    the part of the ear that is responsible for sensations of sound
    inner ear, internal ear, labyrinth
    a complex system of interconnecting cavities; concerned with hearing and equilibrium
    semicircular canal
    one of three tube loops filled with fluid and in planes nearly at right angles with one another; concerned with equilibrium
    stretch receptor
    a receptor in a muscle that responds to stretching of the muscle tissue
    gustatory organ, taste bud, tastebud
    an oval sensory end organ on the surface of the tongue
    naked eye
    the eye unaided by any optical instrument that alters the power of vision or alters the apparent size or distance of objects
    peeper
    an informal term referring to the eye
    OD, oculus dexter
    the right eye
    OS, oculus sinister
    the left eye
    ocellus, simple eye, stemma
    an eye having a single lens
    compound eye
    in insects and some crustaceans: composed of many light-sensitive elements each forming a portion of an image
    organ of Corti
    the hearing organ of the inner ear; contains receptors that respond to sound waves
    carotid body
    a chemoreceptor located near the bifurcations of the carotid arteries; monitors oxygen content of the blood and helps control respiration
    nose, olfactory organ
    the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals
    type of:
    organ
    a fully differentiated structural and functional unit in an animal that is specialized for some particular function
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