Final answer:
The posterior patellar region includes the semimembranosus tendon, oblique popliteal ligament, and popliteus muscle.
Step-by-step explanation:
The posterior patellar region includes the semimembranosus tendon, oblique popliteal ligament, and popliteus muscle. The semimembranosus tendon is one of the tendons of the hamstring group, which flexes the knee. The oblique popliteal ligament is a thickening of the articular capsule of the knee joint, and the popliteus muscle is a small muscle that flexes the leg at the knee.