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Related to cardiovascular reflex: Baroreceptor reflex
a reflex in which heart and circulatory functions are altered in response to changes in heart rate, vascular tone, blood volume, or other variables, usually involving bioreceptors.
1. A sympathetic increase in heart rate when there is increased pressure in or distention of great veins.
2. Reflex vasoconstriction resulting from reduced venous pressure.
See also: reflex