Nasal Cavity

Question 1

roof of nasal cavity

Answer 1

• frontal bone
• nasal bone
• cribriform plate of ethmoid bone
• body of sphenoid bone

Question 2

floor of nasal cavity

Answer 2

hard palate:
* palatine process of the maxilla
* horizontal plate of palatine bone

Question 3

medial wall of nasal cavity

Answer 3

nasal septum:
* perpendicular plate of ethmoid bone
* vomer bone
* cartilage

Question 4

lateral walls of nasal cavity

Answer 4

• maxilla bones
• lacrimal bones
• ethmoid bones
• inferior nasal conchae
• palatine bones
• sphenoid bones

Question 5

paranasal sinuses

Answer 5

• frontal
• sphenoid
• ethmoidal air cells
• maxillary

Question 6

superior, inferior, and middle concha

Answer 6

Question 7

superior, middle and inferior meatuses

Answer 7

Question 8

ethmoidal bulla

Answer 8

Question 9

semilunar hiatus

Answer 9

Question 10

nerve supply of nasal walls

Answer 10

• branches of the olfactory
• ophthalmic
• maxillary nerves

Question 11

special sensory supply of nasal cavity

Answer 11

olfactory nerve

Question 12

what is the pirifrom aperture

Answer 12

the bony opening of the nose

Question 13

how does the frontal sinus open into the nasal cavity

Answer 13

through the frontonasal duct, into the infundiblum and from there into the semilunar hiatus of the middle meatus

Question 14

how does the maxillary sinus open into the nasal cavity

Answer 14

into the infundibulum and then into the semilunar hiatus of middle meatus

Question 15

how does the sphenoid sinus open into the nasal cavity

Answer 15

drains onto posterior roof

Question 16

innervation of frontal sinus

Answer 16

supraorbital nerve (branch of ophthalmic)

Question 17

arterial supply of frontal sinuses

Answer 17

anterior ethmoidal artery (branch of internal carotid)

Question 18

innervation of sphenoid sinuses

Answer 18

posterior ethmoidal nerve (branch of ophthalmic)

Question 19

arterial supply of sphenoid sinuses

Answer 19

pharyngeal branch of maxillary arteries

Question 20

how does anterior ethmoidal sinus drain into nasal cavity

Answer 20

into semilunar hiatus in middle meatus

Question 21

how does middle ethmoidal sinus drain into nasal cavity

Answer 21

into lateral wall of middle meatus

Question 22

how does posterior ethmoidal sinus drain into nasal cavity

Answer 22

onto lateral wall of superior meatus

Question 23

innervation of ethmoidal sinuses

Answer 23

anterior and posterior ethmoidal branches of the nasociliary nerve and the maxillary nerve

Question 24

arterial supply of ethmoidal sinuses

Answer 24

anterior and posterior ethmoidal arteries

Question 25

where does the nasolacrimal duct drain into

Answer 25

inferior meatus

Question 26

where does the eustachian tube drain into

Answer 26

nasopharynx at level of inferior meatus

Question 27

where does the sphenopalatine foramen open

Answer 27

outside: pterygomaxillary fissure
inside: superior meatus

Question 28

levator palati function

Answer 28

moves soft palate upwards and backwards

Question 29

levator palati innervation

Answer 29

glossopharyngeal nerve

Question 30

tensor palati function

Answer 30

tightens palate during swallow

Question 31

tensor palati innervation

Answer 31

mandibular branch of trigeminal nerve