Question

What is the use of valves in the veins?

Answer 1

to stop the blood or to regulate the blood flow

Answer 2

Movement of the leg squeezes the veins, which pushes the blood toward the heart. When the muscles contract the blood within the veins is squeezed up the vein and the valves open. When the muscle is at rest, the valves closehelping to prevent the backward flowof blood.