Vascular resistance is the friction between veins and arteries and blood. in essence, it is a measure of the flow of blood. which is not a factor that directly affects vascular resistance? a) blood viscosity b) blood vessel length c) blood vessel lumen size d) blood levels of estradiol and testosterone

D) blood levels of estradiol and testosterone

Vascular resistance is a natural phenomena in which the flow of blood in the blood vessel of human is restricted by the presence of the blood clot, deposition of fat or cholesterol in the blood vessel, increase in the viscosity of the blood, decrease in the length of the blood vessel and change in the size of the lumen or diameter of the blood vessel. This is also called as vasoconstriction.

The estradiol and testosterone are two sex hormones found in females and males respectively. The levels of these hormones in the blood is not responsible for the vascular resistance.

option a and d is the correct answer

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