Nasal Cavity and Pharynx

Question 1

External nose

Answer 1

Nasal planum (nasal plate)
-Bare skin around nostrils

Philtrum
-Slit in nasal planum and upper lip

Nostril (external naris)
-Opens into nasal vestibule
-Wing of nostril - thickened dorsolateral portion of nostril

Question 2

Bone and cartilage of external nose

Answer 2

Bone: Incisive bone, maxilla, nasal bone

Cartilage: septal cartilage, dorsal lateral nasal cartilage, ventral lateral nasal cartilage, accessory cartilage

Question 3

Nasal cavity

Answer 3

Facial part of respiratory tract
Divided into right and left halves by nasal septum
Cranial boundary - nostrils
Caudal boundary - choanae

Question 4

Nasal vestibule

Answer 4

Initial part of nasal cavity
Location of nasolacrimal duct opening
Contains the alar fold

Question 5

Alar fold

Answer 5

Extension of ventral nasal concha
Terminates in nasal vestibule
Fuses to wing of nostril
Diverts air medially and ventrally

Question 6

Conchae

Answer 6

Dorsal nasal concha
Ventral nasal concha
Ethmoid labyrinth

Question 7

Nasal meatuses

Answer 7

Dorsal nasal meatus
Middle nasal meatus
Ventral nasal meatus
Common nasal meatus