Nasal Cavity

Question 1

Where does the sphenoidal air sinus open into the nasal cavity?

Answer 1

sphenoethmoidal recess

Question 2

Where does the frontal and maxillary sinuses open into the nasal cavity?

Answer 2

hiatus semilunaris in middle meatus

Question 3

Where does the nasolacrimal sack from the lacrimal gland open into the nasal cavity?

Answer 3

nasolacrimal duct in inferior nasal meatus

Question 4

Ethmoidal sinuses are little and numerous. Where can these be seen in the nasal cavity?

Answer 4

ethmoidal bulla (bulge in bone in concavity of hiatus semilunaris)

Question 5

Why are infections in maxillary sinus often hard to treat?

Answer 5

The maxillary sinus is difficult to drain as the ostium (opening to nasal cavity) is quite high up in the wall

Question 6

Which nerve supplies the most anterior part of the hard palate? Which foramen does this travel through to enter the oral cavity?

Answer 6

nasopalatine n.

incisive foramen