Final answer:
The superficial inguinal nodes drain lymph fluid from the lower abdomen, pelvis, external genitalia (excluding the testis), and superficial regions of the leg and thigh.
Step-by-step explanation:
What Do the Superficial Inguinal Nodes Drain?
The superficial inguinal nodes are a part of the lymphatic system that drains lymph fluid primarily from the lower abdomen, the pelvis, the external genitalia (excluding the testis), and the lower limbs, specifically the superficial portions of the leg and thigh that flow into the femoral vein. These nodes are responsible for filtering and draining lymph, which originates from interstitial fluid, before it eventually merges into larger lymphatic vessels known as lymphatic trunk. The lymph fluid from the mentioned areas passes through these nodes for filtration before ultimately being directed into the subclavian veins; on the right via the right lymphatic duct and on the left via the thoracic duct.