The venous system is a network of blood vessels that consists of superficial veins and deep veins and their connecting veins (perforating veins).
Veins transport de-oxygenated blood from the periphery of the body back to the heart.
Varicose veins (called varices) are pathologically mutated veins of this system.
The most prominent veins reference the medical treatment of the legs are the Vena saphena magna (great saphenous vein) and the Vena saphena parva (small saphenous vein) with their side branches respectively.
