nose and sinus anatomy

Question 1

what is the side of the nose called?

Answer 1

ala

Question 2

what is the bit between the nostrils called?

Answer 2

septum

Question 3

bones of the nasal cavities?

Answer 3

nasal bone
vomer
maxilla
inferior nasal conchae
perpendicular plate of ethmoid bone

Question 4

what wall of the nasal cavity do these make?

conchae, nasal bone, maxilla, palantine bone, pterygoid plate of spehnoid

Answer 4

lateral wall

Question 5

what wall of the nasal cavity do these make?

septal cartilage, vomer
perpendicular plate of ethmoid?

Answer 5

medial

Question 6

what type of mucosa is at the very front on the nose//

Answer 6

karatinised stratified squamous epthelium

Question 7

what type of mucosa makes up the middle part and posterior inferior end of nasal cavity?

Answer 7

resp epthelium

Question 8

what type of mucosa is in the most posterior and superior corner of nasal cavity?

Answer 8

olfactory epthithelium

Question 9

where does the olfactory tract end?

Answer 9

in temporal bone

Question 10

what nerve supplies sensory to the nasal cavity?

Answer 10

trigeminal (CN V)- opthalamic division top half via anterior/posterior ethmoidal branches of nasociliary nerve
and maxillary bottom half via nasopalantine and greater palantine nerves

Question 11

opthalmic artery branches from?

Answer 11

internal carotids

Question 12

facial and maxillary artery branch from?

Answer 12

external carotis

Question 13

describe blood supply to nasal cavities?

Answer 13

opthalamic artery via anterior and posterior ethmoidal arteries

maxillary artery via sphenopalatine and greater palatine arteries

facial artery via lateral nasal branch of facial or septal branch of superior labial artery

Question 14

what is Kiesselbachs (little’s) area?

Answer 14

an arterial anastomosis on nasal septum

common site for nosebleeds

Question 15

how many conchae are there?

Answer 15

3-superior, middle, inferior

Question 16

what are the meatuses?

Answer 16

spaces underneath the conchae-superior, middle and inferior

Question 17

what is the sphenoethmoidal recess?

Answer 17

a space behind the superior conchae

Question 18

name the paranasal sinuses?

Answer 18

frontal x2
maxillary x2
ethmoidal air cells x2
sphenoidal (1 or 2)

Question 19

where does the frontal sinus drain to?

Answer 19

middle meatus

Question 20

where does maxillary sinus drain to?

Answer 20

middle meatus

Question 21

where do the ethmoidal air cells drain to?

Answer 21

superior and middle meatuses

Question 22

where does the sphenoidal sinus drain to?

Answer 22

sphenoethmoidal recess

Question 23

what is lacrimal fluid?

Answer 23

tears

Question 24

what does the lacrimal gland produce?

Answer 24

lacrimal fluid -tears

Question 25

where does lacrimal fluid drain to?

Answer 25

nasolacrimal duct then to INFERIOR meatus

Question 26

which sinus is predisposed to inflammation?

Answer 26

maxillary

Question 27

can maxillary sinusitis present as toothache?

Answer 27

yes