What is the Function of Valves in the Veins

Question

What is the function of valves in the veins?
A) increase the rate of blood flow
B) prevent the backward flow of blood
C) regulate blood pressure
D) oxygenate the blood
E) remove debris from the blood

Accepted Answer

The function of valves in the veins is to prevent the backward flow of blood. This is necessary because veins carry blood back to the heart, and if the blood flows backward, it can cause pooling, leading to conditions such as varicose veins.