brief time-out of the heart's electrical impulse that allows for sufficient time for ventricular filling between beats ~ vasodilation
Heart beat is the synchronized way of the contraction and the relaxation of the heart.
Vasodilators are medications that open (dilate) blood vessels. They affect the muscles in the walls of the arteries and veins, preventing the muscles from tightening and the walls from narrowing. As a result, blood flows more easily through the vessels. The heart doesn't have to pump as hard, reducing blood pressure.
The process of vasodilation naturally leads to a drop in blood pressure. This is due to the widening of the blood vessels, which leads to a greater blood flow and therefore less pressure on the walls of the blood vessels
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