Bony Structure of the Nasal Cavity

Question 1

Functions of the nose

Answer 1

• Respiration
• Olfaction
• Filtration of dust
• Humidification of inspired air
• Reception and elimination of secretions
• Warmed

Question 2

What separates the 2 chambers of the nasal cavity?

Answer 2

Nasal septum

Question 3

3 projections from the lateral wall of the nasal cavity

Answer 3

• Superior concha
• Middle concha
• Inferior concha

Question 4

Functions of conchae

Answer 4

Moisten and warm air to body temperature when it is passing through the nasal cavity

Question 5

Names spaces above/below each concha

Answer 5

• Above superior concha = spheno-ethmoidal recess
• Below superior concha = superior meatus
• Below middle concha = middle meatus
• Below inferior concha = inferior meatus

Question 6

What bones form the boundary of the anterior nasal aperture?

Answer 6

• Nasal bones (superior)
• Maxilla (lateral + inferior)

Question 7

What bones make up the skeletal part of the nasal septum?

Answer 7

• Perpendicular plate of ethmoid (superior)
• Vomer (inferior)

Question 8

What cartilage forms the cartilaginous part of the nasal septum?

Answer 8

Septal cartilage

Question 9

Where is the alar cartilage found and what is its function?

Answer 9

• Laterally to the nasal cavity
• Forms shape of the nostrils

Question 10

What bones are each of the conchae part of?

Answer 10

• Superior + middle = ethmoid bone
• Inferior = its own bone

Question 11

What are the 2 spaces found posteriorly to the nasal cavity called?

Answer 11

Choanae

Question 12

What bones form the lateral wall of the nasal cavity?

Answer 12

• Nasal bone
• Ethmoid bone
• Pterygoid plate of sphenoid bone
• Vertical process of palatine bone

Question 13

What bones form the floor of the nasal cavity?

Answer 13

• Horizontal process of palatine bone
• Palatine process of maxilla

Question 14

What bones form the roof of the nasal cavity?

Answer 14

• Frontal bone
• Nasal bone
• Cribriform plate of ethmoid bone
• Sphenoid bone