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If an increase in vascular resistance causes a decrease in blood flow why would this decrease...

If an increase in vascular resistance causes a decrease in blood flow why would this decrease the pressure gradient between arteries and veins?

Science   Anatomy-And-Physiology   
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Answer #1

Answer:- Resistance is proportional to length of the tube, viscosity of blood, and inversely proportional to radius to the fourth power (Poiseulle's Law). Therefore a blood flows down pressure gradient is directly proportional to pressure gradient between arteries and veins and inversely proportional to vascular resistance.

As the blood flows down a pressure gradient thus an increase in vascular resistance causes a decrease in blood flow results in decrease the pressure gradient between arteries and veins.

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