MICROANATOMY

Detailed explanation-1: -The valves’ main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart; when the valves are closed, blood cannot flow back towards the legs. The deep veins carry 90% or more of the blood from the legs toward the heart.

Detailed explanation-2: -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.

Detailed explanation-3: -Your deep veins do the important work of moving your oxygen-poor blood back to your heart. In your legs, your deep veins hold about 90% of the blood that travels back to your heart. Your deep veins contain one-way valves that keep your blood moving in the right direction.

Detailed explanation-4: -One-Way Valves in the Veins One-way valves consist of two flaps (cusps or leaflets) with edges that meet. These valves help veins return blood to the heart. As blood moves toward the heart, it pushes the flaps open like a pair of one-way swinging doors (shown on the left).