Nose, Nasal Cavity, and Paranasal Sinuses-Week 9

The external nose is attached inferiorly to the:

• Nasal bone

• Anterior nasal spine

• Nasal septum

The septum is formed from the vomer, ethmoid, and the __________of the septum. (HINT: Note the number of letters in the space provided)

The____________ is located where the maxillae and ethmoid bones meet.

• inferior nasal concha

• anterior nasal spine

The maxillary sinuses are the largest of the paranasal sinuses.

• True

• False

The frontal sinuses are located just below the orbital cavity.

• True

• Fase

Answer explanation

The frontal sinuses are located just above the orbital cavity.

Ethmoid sinuses are often called ethmoid air cells because they are divided into numerous air cells.

• True

• False

Ethmoid sinuses are often called ethmoid air cells because they are divided into numerous air cells.

• True

• False

The maxillary sinus can enlarge and expand after maxillary molars are extracted.

• true

• false

The cribriform plate is a part of the:

• Sphenoid bone

• Ethmoid bone

• External auditory meatus

The three nasal concha on each side of the nasal cavity all arise from the ethmoid bone.

• True

• Fase

Answer explanation

False. There are three nasal conchae, but only the superior and the middle come from the ethmoid; the inferior nasal concha is a separate bone.