Final answer:
The popliteal vein is formed by the convergence of the anterior and posterior tibial veins and the fibular vein, which drain various parts of the lower limb.
Step-by-step explanation:
The popliteal vein is formed by the union of the anterior and posterior tibial veins and the fibular vein. The anterior tibial vein, which drains the area near the tibialis anterior muscle, and the fibular vein, which drains the muscles and integument near the fibula, merge to contribute to the popliteal vein. Similarly, the posterior tibial vein, formed from the dorsal venous arch and draining the area near the posterior surface of the tibia, also flows into the popliteal vein. Collectively, these veins support the venous return from the lower limb to the heart.