Final answer:
The most superficial parts of the popliteal fossa are the superficial veins and the superficial lymph nodes.
Step-by-step explanation:
The most superficial parts of the popliteal fossa are the superficial veins and the superficial lymph nodes.
The superficial veins include the small saphenous vein and the great saphenous vein. These veins drain blood from the superficial regions of the lower leg and foot, and flow into the popliteal vein.
The superficial lymph nodes are part of the lymphatic system and help in filtering and draining lymph fluid from the lower limbs.