The retromandibular vein is a branch of the jugular veins. The jugular veins go up the neck and join with the facial vein, which drain blood from the face and return it to the heart for oxygenation.

Near the popliteal artery the popliteal vein follows and carries blood from the knee (as well as the thigh and calf muscles) back to the heart. The junction of the anterior tibial vein and posterior ...