Tributary of femoral vein, each instance of which extends from the dorsum of some foot to just below some inguinal ligament and drains the superficial structures of some lower limb, perineum, and lower abdominal wall through many tributaries, including the medial end of the dorsal venous arch of some foot, and the accessory saphenous, superficial external pudendal, superficial circumflex iliac, superficial epigastric, and numerous cutaneous veins.