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': 'Sinus of Morgagni is between: \nSelect and explain. \nA. Middle constrictor and inferior constrictor, B. Middle constrictor and superior constrictor, C. Superior constrictor and skull, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sinus of Morgagni is a gap between the base of skull and the upper concave border of superior constrictor muscle.\nStructures passing through that are: Auditory tube, levator palati muscle, ascending palatine artery and palatine branch of the\xa0ascending pharyngeal artery.', 'role': 'assistant'}]