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The baroreflex orbaroreceptor reflex is one of the body's homeostatic mechanisms that helps to maintain blood pressure at nearly constant levels. The baroreflex provides a rapid negative feedback loop in which an elevated blood pressure causes the heart rate to decrease. Decreased blood pressure decreases baroreflex activation and causes heart rate to increase and to restore blood pressure levels. Their function is to sense pressure changes by responding to change in the tension of the arterial wall The baroreflex can begin to act in less than the duration of a cardiac cycle (fractions of a second) and thus baroreflex adjustments are key factors in dealing with postural hypotension, the tendency for blood pressure to decrease on standing due to gravity.

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  • Baroreflex (de)
  • Baroreflex (en)
  • Baroréflexe (fr)
  • Riflesso barocettivo (it)
  • 血圧反射機能 (ja)
  • Baroreceptorreflex (nl)
  • 感壓反射 (zh)
rdfs:comment
  • Le baroréflexe permet de moduler le système nerveux sympathique et parasympathique en fonction de la pression artérielle telle que perçue par les barorécepteurs. On décrit un baroreflexe artériel déclenché par la décharge rapide des barorécepteurs à la bifurcation carotidienne et de la crosse aortique, et un baroreflexe cardiaque (bainbridge reflex en anglais) déclenché par les barorécepteurs du coeur, essenciellement groupés dans l'atrium droit. (fr)
  • 压力感受器反射（英語：baroreceptor reflex）又称感壓反射（英語：baroreflex）是體內一種生命徵象恆定機制，藉由神經傳遞物質調控自主神經而改變血管平滑肌的收縮與放鬆和心臟功能，以確保體內的血壓長時間維持在穩定的區間，不產生過大的波動。 (zh)
  • The baroreflex orbaroreceptor reflex is one of the body's homeostatic mechanisms that helps to maintain blood pressure at nearly constant levels. The baroreflex provides a rapid negative feedback loop in which an elevated blood pressure causes the heart rate to decrease. Decreased blood pressure decreases baroreflex activation and causes heart rate to increase and to restore blood pressure levels. Their function is to sense pressure changes by responding to change in the tension of the arterial wall The baroreflex can begin to act in less than the duration of a cardiac cycle (fractions of a second) and thus baroreflex adjustments are key factors in dealing with postural hypotension, the tendency for blood pressure to decrease on standing due to gravity. (en)
  • Der Baroreflex oder Barorezeptor-Reflex ist ein homöostatischer Mechanismus, der den Blutdruck aufrechterhält. Er basiert auf einer negativen Feedback-Schleife, in der ein erhöhter Blutdruck reflektorisch die Herzfrequenz und damit den Blutdruck senkt; umgekehrt unterdrückt ein niedriger Blutdruck den Baroreflex, wodurch die Herzfrequenz und damit der Blutdruck wieder steigt. (de)
  • Il riflesso barocettivo o baroriflesso è uno dei meccanismi omeostatici del corpo che aiuta a mantenere la pressione sanguigna a livelli pressoché costanti. Il baroriflesso fornisce un feedback negativo rapido in cui un'elevata pressione sanguigna causa una diminuzione della frequenza cardiaca e anche una diminuzione della pressione sanguigna. Una diminuzione della pressione sanguigna riduce l'attivazione del baroriflesso e aumenta la frequenza cardiaca e ripristina i livelli di pressione sanguigna. Il baroriflesso realizza i propri effetti in meno tempo della durata di un ciclo cardiaco (frazioni di secondo) e quindi le regolazioni del baroriflesso sono fattori chiave nel trattare l'ipotensione posturale, la tendenza alla diminuzione della pressione arteriosa a causa della gravità. (it)
  • 血圧反射機能（けつあつはんしゃきのう）とは、血圧の値を一定の範囲に保持するための反射システム。血圧反射、動脈圧反射、圧受容器反射（英 baroreflex）と表現されることもある。 本態性高血圧症の患者の一部では、この血圧反射機能の感受性の低下が高血圧の原因の一つになっていることが知られている。 圧受容器（英 baroreceptor）は、頚動脈洞と大動脈弓に存在し、血圧の変動を感知している。血圧が上昇すると、圧受容器が反応し、反射的に、心拍数が下がり、心筋の収縮力が低下し、動脈が拡張するので血圧が下がって正常値に復帰する。しかしながらある種の高血圧患者では、この反射の感受性が低下し、高血圧の病因となるので、循環器病学、心臓病学などにおいても重要な概念である。 血圧反射の感受性は、血圧の変動に対する心拍数の変化などで診断される。すなわち、薬剤注射などによりを血圧を上昇させた際に、心拍数の減少を記録し、血圧の上昇量に対する心拍の反応で診断を行う。しかしながらこの方法では、心臓の血圧反射機能は診断できるが、血管系、動脈系の血圧反射機能は診断できない。そこで、血管の血圧反射機能を定量的に診断するために、最近では脈波伝播速度の情報から動脈の血圧反射機能を診断する方法も東北大学などから提案されている。 (ja)
  • De baroreceptorreflex of baroreflex is het primaire homeostatische regelsysteem van het lichaam dat zorgt voor de instandhouding van de bloeddruk in het lichaam. Dit gebeurt door middel van de baroreceptoren: speciale rek-gevoelige zintuigen die zich onder andere bevinden aan weerszijden aan de binnenzijde van de halsslagaders (arteriae carotides) en in de aortaboog. (nl)
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