This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'Muller&;s muscle is found in \nSelect and explain. \nA. Pharynx, B. Middle ear, C. Eye lid, D. Tongue', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mullers muscle or involuntary pa of levator palpebrae superioris is supplied by sympathetic fibres from the superior cervical ganglion. Paralysis of mullers muscle leads to paial ptosis. This is a pa of horners syndrome. Ref BDC volume 3,Sixth edition pg 74', 'role': 'assistant'}]