Nasal Cavity and Paranasal Sinuses

Question 1

What is the only external cartilage of the nose that is not paired?

Answer 1

Septal cartilage

Question 2

What type of cells are found in the nasal cavity?

Answer 2

Ciliated pseudostratified columnar epithelium

Question 3

The posterior aperature of the opening into the nasopharynx

Answer 3

Choanae

Question 4

Bones that make up the lateral nasal wall

Answer 4

Nasal
Maxilla
Lacrimal
Ethmoid
Sphenoid
Palatine
Inferior concha

Question 5

Cartilage that makes up the lateral nasal wall

Answer 5

Lateral process of septal cartilage
Major alar cartilage
Minor alar cartilage

Question 6

Bones that make up the medial nasal wall

Answer 6

Nasal
Ethmoid
Maxillary
Palatine
Vomer

Question 7

Cartilage that make up the medial nasal wall

Answer 7

Septal cartilage

Question 8

The frontal sinus drains into this

Answer 8

Infundibulum

Question 9

This is located in the middle meatus and is the opening that the infundibulum drains

Answer 9

Hiatus semilunaris

Question 10

Where is the ethmoidal bulla located?

Answer 10

Middle meatus

Question 11

What is located in the ethmoidal bulla?

Answer 11

Middle ethmoid air cells

Question 12

What are the three walls of the maxillary sinuses?

Answer 12

Superior: Floor of the orbit
Medial: Lateral wall of the nasal cavity
Lateral: Maxillary and zygomatic bones

Question 13

What is the maxillary ostium?

Answer 13

Opening to middle nasal meatus from the maxillary sinus

Question 14

The frontonasal duct goes from here to here

Answer 14

Frontal sinus to middle meatus

Question 15

And extraction of a maxillary tooth may do this

Answer 15

Tear nasal membrane and produce a fistula between the mouth and maxillary sinus

Question 16

What are the ethmoidal openings into the nasal cavities

Answer 16

Semilunar hiatus (anterior)
Opening of the middle ethmoidal cells
Opening of the posterior ethmoidal cells

Question 17

Area where the sphenoid sinus opening is located

Answer 17

Sphenoethmoidal recess

Question 18

Where is the sphenoethmoidal recess located?

Answer 18

Superior nasal meatus

Question 19

What does the anterior ethmoidal a. branches supply?

Answer 19

Upper anterior septum

Lateral wall of nasal cavity

Question 20

What does the posterior ethmoidal a. branches supply?

Answer 20

Upper posterior septum

Later wall of nasal cavity

Question 21

These arteries supply the lower septum and lateral nasal wall

Answer 21

Sphenopalatine branches

Question 22

Area of nasal cavity that has a lot of anastomoses and is prone to nosebleeds

Answer 22

Kisselbox area

Question 23

The olfactory nerve is located here

Answer 23

Cribriform plate of the ethmoid bone

Question 24

Branches of this nerve provides general sensation to the paranasal sinuses

Answer 24

Maxillary n.

Question 25

The greater petrosal n provides this to the paranasal sinuses

Answer 25

Parasympathetic fibers

Question 26

What provides sympathetic fibers to the paranasal sinuses?

Answer 26

Deep petrosal branches of T1

Question 27

Artery that supplies the nasal cavity

Answer 27

Posterior lateral nasal branches of the sphenopalatine artery

Question 28

These nerves innervate the nasal cavity

Answer 28

Posterior superior and inferior lateral nasal branches of the maxillary nerve Nasopalatine nerve