This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Extremity, Subject name: Anatomy
[{'content': 'Action of popliteus is - \nSelect and explain. \nA. Locking of knee joi nt, B. Unlocking of knee joint, C. Medial rotation of femur on tibia, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Unlocking of knee joint Popliteus* Popliteus is a deep muscle of posterior compartment of leg.* Features of popletius are -Origin# Lateral surface of lateral condyle of femur, origin is intracapsular.# Outer margin of lateral meniscus of knee.Insertion# Posterior surface of shaft of tibia above soleal line.Nerve supply# Tibial nerveAction# Ulocks knee joint by lateral rotation of femur on tibia prior flexion.# Accessory flexor of knee.", 'role': 'assistant'}]