This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose, Subject name: Anatomy
Opening of the nasolacrimal duct is in 
Select and explain. 
A. Inferior meatus, B. Superior meatus, C. Middle meatus, D. Sphenoethmoidal recess
A: Inferior meatus
Answer: A: Inferior meatus 
Explanation: Ans. is 'a' i.e. Inferior meatus Openings in the lateral wall of nasal cavity *Inferior meatus : Nasolacrimal duct*Middle meatus : Anterior ethmoidal sinus*Frontal sinus*Maxillary sinus*Superior meatus : Posterior ethmoidal sinuses*Sphenoethmoidal recess : Sphenoid sinus*Note: that the nasolacrimal duct opens into the inferior meatus but if its blocked and a DCR (Dacryocystorhinostomy) operation is performed the new opening is in the middle meatus*