baroreflex

noun
baro·​re·​flex | \ ˈbar-ō-ˌrē-ˌfleks How to pronounce baroreflex (audio) \

Medical Definition of baroreflex

: the reflex mechanism by which baroreceptors regulate blood pressure that includes transmission of nerve impulses from the baroreceptors to the medulla in response to a change in blood pressure and that produces vasodilation and a decrease in heart rate when blood pressure increases and vasoconstriction and an increase in heart rate when blood pressure decreases

called also baroreceptor reflex

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