The Probert Encyclopaedia of Medicine

FEMORAL VEIN

The femoral vein extends up the inner thigh along the femoral artery toward the groin where it joins with the internal saphenous vein and becomes the external iliac. The
femoral vein receives the greater part of the blood from the legs. This vein has four or five valves to assist in the transport of blood. The valves open to let blood through, and close to prevent it from flowing backward.
Research Femoral Vein