This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Muscle used in normal walk during stance and swing \nSelect and explain. \nA. Ilio psoas, B. Tibialis Anterior, C. Popliteus, D. Gastrocnemius-soleus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Each leg goes through stance phase and swing phase in normal walking.\nStance phase - Foot on ground. 60% of gait. \nMain muscles involved are\n\n\xa0 \xa0Heel strike - quadriceps, hamstrings, tibialis anterior\n\xa0 \xa0Mid stance - quadriceps, hamstrings, tibialis anterior, gluteus maximus\n\xa0 \xa0Push off - gastrocnemius -soleus\n\nSwing phase - Foot not on ground, 40% of gait.\nMain muscles involved are\n\n\xa0 \xa0Acceleration - quadriceps\n\xa0 \xa0Swing through - iliopsoas\n\xa0 \xa0Deceleration - hamstrings and tibialis anterior.', 'role': 'assistant'}]