10 - nasal cavity and paranasal air sinuses

Question 1

which type of epithelium forms respiratory mucosa which lines most of nasal cavity?

Answer 1

ciliated pseudostratified columnar epithelium

Question 2

what does the olfactory mucosa line?

Answer 2

the roof of the nasal cavity

Question 3

which plate do axons of CN I pass through to enter the cranial cavity?

Answer 3

cribriform plate of ethmoid

Question 4

name the 3 conchae of the nasal cavity?

Answer 4

superior meatus
middle meatus
inferior meatus

Question 5

what is the space above the superior concha?

Answer 5

sphenoethmoidal recess

Question 6

what bone is the inferior concha part of?

Answer 6

maxilla

Question 7

what bone are the middle and superior concha part of?

Answer 7

ethmoid

Question 8

arterial supply of the nose?

Answer 8

branches of ophthalmic a. and ECA

Question 9

venous drainage of nose?

Answer 9

venous plexus

Question 10

CLINICAL -

what is the possible consequence of rich vascular supply of the nose?

Answer 10

nose bleeds

Question 11

what are the paranasal air sinuses?

Answer 11

group of air filled spaces in nasal cavity

Question 12

3 functions of the paranasal air sinuses?

Answer 12

decrease weight of skull
vocal resonance
buffer for trauma

Question 13

what does the sphenoid-ethmoid recess open into?

Answer 13

sphenoidal sinus

Question 14

what does the superior meatus open into?

Answer 14

posterior ethmoidal air cells

Question 15

what does the middle meatus open into?

Answer 15

frontal sinus

maxillary sinus …………………..

Question 16

what does the inferior meatus open into?

Answer 16

nasal lacrimal duct

Question 17

CLINICAL -

what can sinusitis result in?

Answer 17

blockage of the sinus opening into the nasal cavity and so severe pain of sinus

Question 18

CLINICAL -

which nerve carries the pain caused by sinusitis?

Answer 18

branches of trigeminal n (CN V)

Question 19

what innervates the frontal air sinus?

Answer 19

ophthalmic (CN V1)

Question 20

what innervates the maxillary air sinus?

Answer 20

maxillary (CN V2)

Question 21

what innervates the sphenoid air sinus?

Answer 21

ophthalmic and maxillary (CN V 1+2)

Question 22

what innervates the ethmoidal air sinus?

Answer 22

ophthalmic (CN V1)

Question 23

which 2 bones form the roof of the nasopharynx?

Answer 23

occipital

sphenoid

Question 24

2 important structures which lie in the nasopharynx?

Answer 24

adenoids

Eustachian tube