Question

Why valves are present in veins

Answer 1

Hello .

Valves are primarily structures that are present in the veins whose chief function is to prevent the backflow of blood down the vein. There are a total of four valves present in the human heart..

Hope it helps..

Answer 2

hey friend,
here's your answer,
blood in veins flows uniformly and continuously therefore thin pocket-shaped valves are present to prevent the back flow of the blood.
hope it helps you....!