Pterygopalatine Fossa and Nasal Cavity

Question 1

What bones make up the nose?

Answer 1

Nasal bones, frontal process of maxilla, nasal part of frontal bone, bony part of nasal septum

Question 2

What cartilages make up the nose?

Answer 2

Lateral cartilage, alar cartilage, septal cartilage

Question 3

What do the conchae do?

Answer 3

Increase surface area of nasal cavity to warm/cool air

Question 4

Within the nasal cavity what are the two areas lined by mucosa?

Answer 4

Respiratory area (inferior 2/3) and olfactory area (superior 1/3)

Question 5

Where are the openings of the posterior ethmoidal sinuses?

Answer 5

Beneath the fold of the superior turbinate

Question 6

Where is the opening of the spehnoidal sinus?

Answer 6

Outside of the superior turbinate

Question 7

Where is the opening of the ethmoidal sinus?

Answer 7

Beneath the fold of the middle turbinate at the ethmoid bulla

Question 8

Where is the opening of the frontal sinus?

Answer 8

In front of the ethmoid bulla beneath the fold of the middle turbinate

Question 9

Where is the opening of the maxillary sinus?

Answer 9

Below the ethmoid bulla (largest)

Question 10

Where is the opening of the nasolacrimal duct?

Answer 10

Beneath the fold of the inferior turbinate

Question 11

What is the main blood supply to the nasal cavity?

Answer 11

Sphenopalatine artery from the maxillary artery

Question 12

What is the Kiesselbach area?

Answer 12

Where all five arteries of the nasal cavity come together in a capillary bed

Question 13

What are the four paranasal sinuses?

Answer 13

Maxillary sinus (largest), ethmoid sinus, sphenoid sinus, frontal sinus

Question 14

What artery and nerve supply the maxillary sinus?

Answer 14

Maxillary a/greater palatine a

Superior alveolar n branches (CN V2)

Question 15

What artery and nerve supply the ethmoid sinus

Answer 15

Ethmoidal a (from ophthalmic a)
Nasociliary n (CN V1)

Question 16

What artery and nerve supply the sphenoid sinus?

Answer 16

Posterior ethmoidal a

Posterior ethmoidsal n (CN V1)

Question 17

What artery and nerve supply the frontal sinus?

Answer 17

Supraorbital a/anterior ethmoidal a
Supraorbital n (CN V1)

Question 18

What are the passageways located in the pterygopalatine fossa?

Answer 18

Inferior orbital fissure, pterygomaxillary fissure, sphenopalatine foramen, foramen rotundum, pharyngeal canal, pterygoid canal, pterygopalatine canal

Question 19

What structures go through the inferior orbital fissure from the pterygopalatine fossa?

Answer 19

Inferior orbital n, zygomatic n, orbital branches (all from V2)

Question 20

What structure goes through the foramen rotundum?

Answer 20

Maxillary n (V2)

Question 21

What structure goes through the pterygoid canal?

Answer 21

N of pterygoid canal

Question 22

What structure goes through the greater palatine canal?

Answer 22

Greater palatine n

Question 23

What structure goes through the lesser palatine canal?

Answer 23

Lesser palatine n

Question 24

What structure goes through the spenopalatine foramen?

Answer 24

Nasopalatine n (CN V2)