Lecture 2

Question 1

What is the nose made of?

Answer 1

Cartilage and bone

Question 2

What are apertures?

Answer 2

Apertures are nostrils

Question 3

What is the nasal septum?

Answer 3

The nasal septum is the bone that divides the nose into two cavity’s.

Question 4

What are the names of the cavities formed by the nasal septum?

Answer 4

The choanae

Question 5

Which Epithelial tissue lines the respiratory region of the nasal cavity?

Answer 5

The pseudostratified ciliated columnar epithelium with goblet cells.

Question 6

What is the function of the epithelial cells in the respiratory nasal cavity?

Answer 6

The function of the pseudostratified ciliated columnar epithelium is to warm and filter inhaled air.

Question 7

What epithelial cells line the olfactory region of the nasal cavity and what is its function?

Answer 7

The olfactory region has an olfactory mucosa region, which is a mix of ciliated epithelial cells with sensory receptors.

Question 8

What are the divisions of the nasal cavity?

Answer 8

In the nasal cavity we have :

The vestibule region 
The respiratory region 
The olfactory region 
The auditory region ( opening to ear canal)
The nasopharynx region

Question 9

What Is the conchae?

Answer 9

The Conchae are 3 bony projections in the bone in the nasal cavity that project medially from the lateral walls.

Question 10

Name the different types of Conchae

Answer 10

The superior Conchae
The middle Conchae
The inferior Conchae

Question 11

What is the function of the conchae?

Answer 11

The function of the Conchae is to increase surface area for more air to be inspired. They also disrupt fast laminar air flow, which slows air down and gives it a chance to warm up. (Just imagine breathing in alot of cold air)

Question 12

What is meatus?

Answer 12

The meatus are broad openings that are inferior to the superior Conchae, middle Conchae and inferior Conchae.

Question 13

What are the different types of meatus?

Answer 13

The superior meatus
The middle meatus
The inferior meatus

Question 14

What are the different paranasal sinuses?

Answer 14

Frontal sinus
Maxillary sinus
Anterior Ethmoidal sinus
Middle Ethmoidal sinus 
Posterior Ethmoidal sinus 
Sphenoidal sinus

Question 15

Where do the paranasal sinuses drain?

Answer 15

The paranasal sinuses drain in the nasal cavity at different parts depending on where they are located.

Question 16

What sinus drains into the middle meatus

Answer 16

The frontal sinus drains into the middle meatus.
The maxillary sinus drains into the middle meatus.
The Ethmoidal anterior and middle drain into the middle meatus.

Question 17

What sinus drains into the superior meatus?

Answer 17

The prosterior ethmoidal sinus drains into the superior meatus.

Question 18

What drains into the sphenoethmoidal recess?

Answer 18

The sphenoidal sinus drains into the sphenoethmoidal recess.

Question 19

What is the nasolacrimal duct?

Answer 19

The nasolacrimal duct is the duct that brings tears from the eyes via the lacrimal into the nasal cavity.

Question 20

What is the kisselbach plexus?

Answer 20

The kisselbach plexus is a vascular network made of 5 arteries that supply the nasal cavity with blood.

Question 21

What are the names of the five arteries that supply the nasal cavity with blood?

Answer 21

Sphenopalatine artery 
Anterior Ethmoidal artery 
Prosterior Ethmoidal artery 
Greater palatine artery 
Superior labial artery

Question 22

What is little’s region?

Answer 22

Little’s region is where all the arteries meet and cross link.

Question 23

What are the nerves in the nasal cavity?

Answer 23

Olphlamic nerve
Maxillary nerve
Mandibular nerve