Nasal Cavity and Paranasal Sinuses

Question 1

The nose is ______ in shape.
The upper end is called the ______.
The free tip is called the _______.
___________:extends from root to apex in midline
Has 2 inferior apertures called ________ (nostrils)
Each nostril is limited laterally by ___ of nose.

Answer 1

Pyramidal
Root
Apex
Dorsum
Nares
Ala

Question 2

The supporting framework of the nose is composed of bone and _______ cartilage.

Answer 2

Hyaline

Question 3

The cartilaginous framework of the nose supports the lower part of the nose, and consists of 3 major pieces:
1
2
3

Answer 3

One septal, and two major alar cartilages

Question 4

Cartilages are connected to each other and to bones by _________ tissue.

Answer 4

Fibrous

Question 5

______ cartilage:

• forms anterior part of nasal septum
• has 2 lateral processes (triangular rin shape, located below inferior border of nasal bones)

Answer 5

Septal

Question 6

_____ ______ cartilages:

- U-shaped, form lateral and medial borders of nostrils (lateral and medial crura, respectively)

Answer 6

Major alar

Question 7

The nasal cavity is a chamber consisting of bony and cartilaginous walls covered with _______.

Answer 7

Mucosa

Question 8

________:

• Area immediately above nares
• Lined with skin and contains stiff hairs

Answer 8

Vestibule

Question 9

Name 3 functions of the nasal cavity:

Answer 9

Olfaction
Conditioning of inspired air (filtration, humidification, warming)
Reception of secretions from paranasal sinuses and nasolacrimal duct

Question 10

Composition of bony walls of the Nasal Cavity:

_______:hard palate, (palatine processes of maxillae and horizontal plates of palatine bones)

Answer 10

Floor

Question 11

Composition of bony walls of the Nasal Cavity:
_______- (form anterior to posterior): nasal bone, nasal spine of frontal bone, cribiform plate of ethmoid, anterior and inferior aspects of body of sphenoid

Answer 11

Roof

Question 12

Composition of bony walls of the Nasal Cavity:
_________: (nasal septum) - perpendicular plate of ethmoid and vomer (+ smaller contributions from sphenoid, maxilla, and palatine)

Answer 12

Medial Wall

Question 13

Composition of bony walls of the Nasal Cavity:
_________: maxilla, lacrimal Boone, inferior nasal concha, ethmoidal labyrinth, perpendicular plate of palatine, and medial pterygoid plate
- has 3 scroll like bony projections
- space between each concha and lateral wall is called ______

Answer 13

Lateral wall

Meatus