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receptor

DEFINITIONS OF: receptor

n 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

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

n 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

Antonyms:: effector
an organ (a gland or muscle) that becomes active in response to nerve impulses

Types:: show 23 types...; hide 23 types...; 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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