baroreflex
noun
\
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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