The leg artery is composed of two parts, the femoral artery and the iliac artery. The femoral artery is a large artery located in the thigh that supplies oxygenated blood to the lower limbs. The iliac artery is a large artery located in the pelvis that supplies oxygenated blood to the lower abdomen and legs. Together, these two arteries form the leg artery, which is responsible for supplying oxygenated blood to the lower body.