THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Veins comprise valves, which prevent the backward flow of the blood. The valves are bicuspid, that is, they comprise two flap-like compositions. In the veins, the valves ensure that the flow of blood takes place only in one direction. On the other hand, arteries carry oxygenated blood away from the heart.

Detailed explanation-2: -Studies suggested that femoral veins contain between one and six valves, and popliteal veins contain between zero and four valves.

Detailed explanation-3: -Blood flow within your legs occurs mainly through the deep venous system. Femoral veins typically have between one to six vein valves, and popliteal veins often contain between zero to four valves.