Question

why are veins provided with valves​

Answer 1

The main function of the valves in veins is to prevent back flow of blood. Blood in the arteries, after being pumped by the heart, are under much higher pressure than blood in veins so there is no need for valves in arteries to prevent back flow.

Mark as the Brainliest.

Answer 2

Veins consists of deoxygenated blood from all parts of the body.

The valves ensure that the blood does flows only in one direction.

Hence veins have valves to ensure that the blood does not flow back and get mixed up with the oxygenated blood.

Hope it helps!!

All the best for exams!!!!