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car·di·ac de·pres·sor re·flex
a fall in blood pressure due to peripheral vasodilation and cardiac inhibition by stimulations of terminations of a cardiac depressor nerve in the aortic arch and base of the heart.
Etymology: L, deprimere, to press down, reflectere, to bend back
a neural mechanism that produces an involuntary vasodilation and fall in arterial blood pressure in response to mechanical stimulation of the carotid sinus.
A reflex that results in slowed muscle activity, as in the heart rate.
See also: reflex