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
Eustachian tube passes between: 
Select and explain. 
A. Superior and middle constrictors, B. Above superior constrictor, C. Middle and inferior constrictor, D. Below inferior constrictor
B: Above superior constrictor
Answer: B: Above superior constrictor 
Explanation: Eustachian tube passes through sinus of Morgagni, which is a gap between the base of skull and the upper concave border of superior constrictor muscle.