baroreceptor


baroreceptor
1. In general, any sensor of pressure changes. 2. Sensory nerve ending in the wall of the auricles of the heart, vena cava, aortic arch, and carotid sinus, sensitive to stretching of the wall resulting from increased pressure from within, and functioning as the receptor of central reflex mechanisms that tend to reduce that pressure. SYN: baroceptor, pressoreceptor. [G. baros, weight, + receptor]

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baro·re·cep·tor .bar-ō-ri-'sep-tər also baro·cep·tor -ō-'sep- n a sensory nerve ending esp. in the walls of large arteries (as the carotid sinus and arch of the aorta) that is sensitive to changes in blood pressure called also pressoreceptor

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n.
a collection of sensory nerve endings specialized to monitor changes in blood pressure. The main receptors lie in the carotid sinus and the aortic arch; others are found in the walls of other large arteries and veins and some within the walls of the heart. Impulses from the receptors reach centres in the medulla; from here autonomic activity is directed so that the heart rate and resistance of the peripheral blood vessels can be adjusted appropriately.

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baro·re·cep·tor (bar″o-re-sepґtər) a type of interoceptor that is stimulated by changes in pressure, particularly one located in the wall of a blood vessel; see also under reflex. Called also baroceptor and pressoreceptor.

Medical dictionary. 2011.

Look at other dictionaries:

  • baroreceptor — BARORECEPTÓR, baroreceptori, s.m. Trimis de paula, 05.04.2002. Sursa: DOOM  BARORECEPTÓR s.m. Presoreceptor. (din fr. barorécepteur) Trimis de tavi, 13.09.2007. Sursa: MDN  baroreceptór s. m., pl. baroreceptóri …   Dicționar Român

  • baroreceptor — [bar΄ō ri sep′tər] n. a nerve ending sensitive to pressure: in the circulatory system they help regulate the dilation of blood vessels by reacting to blood pressure: also baroceptor …   English World dictionary

  • Baroreceptor — Baroreceptors (or baroceptors) in the human body detect the pressure of blood flowing through them, and can send messages to the central nervous system to increase or decrease total peripheral resistance and cardiac output. They are stretch… …   Wikipedia

  • baroreceptor — also baroceptor noun Date: 1948 a sensory nerve ending especially in the walls of large arteries (as the carotid sinus) that is sensitive to changes in blood pressure …   New Collegiate Dictionary

  • baroreceptor — n. [Gr. baros, weight; L. capere, to take] An organ perceiving changes in pressure …   Dictionary of invertebrate zoology

  • baroreceptor — (= baroceptor) In an organism, a receptor that is sensitive to pressure …   Dictionary of molecular biology

  • baroreceptor — /bar oh ri sep teuhr/, n. a nerve ending, as one of those located in the blood vessels, that responds to changes in pressure. [1950 55; BARO + RECEPTOR] * * * …   Universalium

  • baroreceptor — noun A nerve ending that is sensitive to changes in blood pressure …   Wiktionary

  • baroreceptor — ba|ro|re|cep|tor Mot Agut Nom masculí …   Diccionari Català-Català

  • baroreceptor — noun Zoology a receptor sensitive to changes in pressure …   English new terms dictionary


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