Final answer:
The four angles of the Popliteal Fossa are superolateral, superomedial, inferolateral, and inferomedial, formed by muscles surrounding the back of the knee and serving as a pathway for the popliteal artery, veins, and nerves.
Step-by-step explanation:
The Popliteal Fossa is shaped like an inverted diamond and is located at the back of the knee joint. It has boundaries formed by muscles of the thigh and the leg, creating four primary angles. The four angles of the Popliteal Fossa include the superolateral, superomedial, inferolateral, and inferomedial angles. The superolateral angle is formed by the biceps femoris muscle, while the superomedial angle is given shape by the semimembranosus muscle. The inferolateral and inferomedial angles are formed by the lateral and medial heads of the gastrocnemius muscle respectively.
The Popliteal Fossa serves as a passageway for important neurovascular structures including the popliteal artery and veins, as well as the tibial and common fibular (peroneal) nerves. The popliteal artery is a continuation of the femoral artery that travels posterior to the knee and branches into the anterior and posterior tibial arteries. The presence of these structures in the popliteal fossa is crucial for the vascular supply and innervation of the lower leg and foot, including the dorsalis pedis and dorsal arch of the foot.