Nasal Cavity: Basics

Question 1

What are the functions of the nasal cavity?

Answer 1

1) Provide an airway
2) Olfaction
3) Warming and moistening of inspired air
4) Cleansing of inspired air

Question 2

FITB: The nasal cavity extends from (blank) anteriorly and to the (blank) posteriorly

Answer 2

Anterior: Nostrils (Nares)
Posterior: Choanae

Question 3

What are the choanae?

Answer 3

Posterior apertures of the nasal cavity which open into the nasopharynx

Question 4

The external nose consists of…

Answer 4

1) Tip: free end of the nose
2) Root: connects the nose to the forehead
3) Nares (Nostrils)
4) Alae: bound the nares laterally

Question 5

What forms the roof of the nasal cavity?

Answer 5

1) Nasal Bone
2) Frontal Bone
3) Cribiform Plate of the Ethmoid Bone
4) Body of the Sphenoid Bone

Question 6

What forms the floor of the nasal cavity?

Answer 6

1) Palatine process of teh maxillia
2) Horizontal plate of the palintine bone
- These two bones fuse together to form the hard palete

Question 7

What forms the medial wall (nasal septum) of the nasal cavity?

Answer 7

1) Septal Cartilage
2) Perpendicular plate of the ethmoid bone
3) The Vomer

Question 8

What does vomar mean?

Answer 8

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