ANATOMY

Detailed explanation-1: -Venous valves work in conjunction with the musculoskeletal system. Muscles constantly contract and release, causing the blood to flow toward the heart. The valves open, allowing the blood to flow, and close, stopping the blood from flowing backwards.

Detailed explanation-2: -The blood passing through the veins is deoxygenated (except in pulmonary veins) and flows at a low pressure. It flows slow and steady against the direction of gravity. Therefore, veins have valves to prevent the backflow of blood.

Detailed explanation-3: -Veins have valves which stop the blood from flowing backward. This is because blood pressure in veins is very low (compared to arteries).

Detailed explanation-4: -Valves maintain direction of blood flow As the heart pumps blood, a series of valves open and close tightly. These valves ensure that blood flows in only one direction, preventing backflow. The tricuspid valve is situated between the right atrium and right ventricle.

Detailed explanation-5: -What are Vein Valves? Interspersed throughout your veins are small crescent-shaped flaps of tissue, known as valves, that help prevent a backflow of blood. These valves project from the innermost layer of the vein wall to the center of the vein and are angled towards the heart in the direction of venous blood flow.