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: ENT
Hiatus semilunaris is present in - 
Select and explain. 
A. Superior meatus, B. Middle meatus, C. Inferior meatus, D. sphenoethmoidal recess
B: Middle meatus
Answer: B: Middle meatus 
Explanation: Important structures of middle meatus are :-


Hiatus semilunaris, 
Ethmoidal infundibulum,
Anterior & posterior fontanelle,
Uncinate process,
Bulla ethmoidalis.