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
Muller&;s muscle is found in 
Select and explain. 
A. Pharynx, B. Middle ear, C. Eye lid, D. Tongue
C: Eye lid
Answer: C: Eye lid 
Explanation: 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