Nasal Cavity and Paranasal Sinuses

Question 1

anterior portion of the nasal cavity

Answer 1

Nasal vestibule

Question 2

Posterior portion of the nasal cavity

Answer 2

Choanae

Question 3

Divides the nasal cavities

Answer 3

septum

Question 4

Floor of the nasal cavity

Answer 4

Palatine process of the maxilla and horizonal plate of the palatine bone

Question 5

Roof of the nasal cavity

Answer 5

Cribriform plate (middle), nasal spine (anterior), nasal bone (anterior), body of sphenoid bone (posterior)

Question 6

Medial wall of nasal cavity

Answer 6

Perpendicular plate of ethmoid (superior), vomer (posterior), nasal crests of maxilla/palatine bones, nasal spine, vomeronasal cartilage (anterior)

Question 7

Lateral wall of nasal cavity

Answer 7

Inferior/middle/superior turbinates

Question 8

What bone are the middle and superior turbinates part of?

Answer 8

Ethmoid

Question 9

What is a turbinate called when covered in mucosa?

Answer 9

Conchae

Question 10

Elevated portion of the lateral wall that surrounds/separates each conchae

Answer 10

Meatus

Question 11

Space between the superior conchae and the lateral wall

Answer 11

Sphenoethmoidal recess

Question 12

What does the inferior meatus contain?

Answer 12

nasolacrimal duct (anterior portion)

Question 13

What does the middle meatus contain?

Answer 13

Middle ethmoidal air cells (make up ethmoidal bulla), semilunar hiatus, frontal sinus drainage, maxillary sinus

Question 14

What does the superior meatus contain?

Answer 14

Posterior ethmoidal air cells,sphenopalatine foramen

Question 15

What opens into the sphenoethmoidal recess?

Answer 15

Sphenoid sinus

Question 16

Contents of sphenopalatine foramen

Answer 16

Nasopalatine nerve, posterior superior lateral nasal nerve, sphenopalatine artery/vein

Question 17

Contents of incisive canal

Answer 17

Nasopalatine nerve, greater palatine artery

Question 18

Contents of cribriform plate

Answer 18

Filaments of olfactory nerve, posterior ethmoidal artery, posterior ethmoidal nerve

Question 19

Contents of nasal slit

Answer 19

Anterior ethmoidal artery/vein/nerve

Question 20

Contents of foramen cecum

Answer 20

Superior sagittal sinus (frequently absent)

Question 21

Contents of palatine canal

Answer 21

Posterior inferior lateral nasal nerves (off of greater palatine via V2)

Question 22

Bones that contribute to the superior/external nose

Answer 22

nasal bones, frontal process of maxillae, nasal portion of the frontal bone

Question 23

Branches to nasal area via ECA

Answer 23

Sphenopalatine artery, greater palatine artery, superior labial artery, lateral nasal artery

Question 24

Branches off of sphenopalatine artery

Answer 24

Posterior lateral nasal branch, posterior septal branch

Question 25

Branches off of ICA to the nasal area

Answer 25

Posterior/anterior ethmoidal artery

Question 26

Anastomose of nasal arteries in the anterior portion of the septal wall

Answer 26

Kiesselbach's area

Question 27

Branches of V2 that innervate the nasal cavity

Answer 27

Nasopalatine nerve, superior lateral nasal nerve, inferior lateral nasal nerve

Question 28

Branches of V1 that innervate the nasal cavity

Answer 28

Posterior ethmoidal nerve, anterior ethmoidal nerve (turns into the internal nasal nerve as it runs over the anterior septum)

Question 29

Branches of V2 that innervate external nose

Answer 29

Infratrochlear nerve, external nasal branch of anterior ethmoidal nerve

Question 30

Branch of V1 that innervates the external nose

Answer 30

Nasal branches of infraorbital nerve

Question 31

Yellowish, quarter-size patch of sensory epithelium situated near the middle of the roof of the nasal cavity

Answer 31

Olfactory epithelium

Question 32

Innervates the autonomics of the frontal nerve

Answer 32

Supraorbital nerve via frontal of V1

Question 33

Innervates the autonomics of the ethmoidal air cells

Answer 33

Orbital branches via pterygopalatine ganglion

Question 34

Opening of the duct in the maxillary sinus

Answer 34

Maxillary ostium

Question 35

Innervates the mucosa of the maxillary sinus

Answer 35

Superior alveolar nerve

Question 36

Most common site for sinusitis

Answer 36

Maxillary sinus