Nasal Cavity: Anatomy, Structure, Parts, Blood Supply

Question 1. Enumerate the openings into the lateral wall of the nose.
Answer.

The following structures open in the lateral wall of the nose:

Sphenoidal air sinus: Opens into the sphenoethmoidal recess.
Posterior ethmoidal air sinuses: Open into the superior meatus.
Middle ethmoidal air sinuses: Open on the bulla ethmoidal in the middle meatus.
Maxillary air sinus: Opens into the posterior part of hiatus semilunaris at its posterior end in the middle meatus.
Anterior ethmoidal air sinuses: Open into the anterior part of the hiatus semilunaris in the middle meatus.
Frontal air sinus: Opens into the infundibulum at the anterior end of the hiatus semilunaris in the middle meatus.
Nasolacrimal duct: Opens into the anterior part of the inferior meatus.

Question 2. Enumerate the structures opening in the middle meatus of the nose.
Answer.

These are as follows:

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