Anterior femoral cutaneous vein
The anterior femoral cutaneous vein carries oxygen-depleted blood from the capillaries of the superficial anterior thigh. It lies just underneath the frontal surface of the thigh. The anterior femoral cutaneous vein drains into the femoral vein. The femoral vein is considered a deep vein of the thigh and is the main vein that drains the leg. It is part of the inguinal triangle and becomes the external iliac vein after passing the inguinal ligament. A common mnemonic for remembering the position of the femoral vein in the inguinal triangle is NAVaL. From lateral to medial placement: the femoral Nerve, Artery, Vein, and Lymphatics.