Nose & Sinuses

Question 1

the cribiform plate is part of which bone

Answer 1

ethmoid

Question 2

what comes through the cribiform plate

Answer 2

olfactory nerve

Question 3

what is the significance of the vestibule (nose)

Answer 3

will bleed if pick too far coz highly vascular

Question 4

describe the difference b/w conchi and meatuses. on which wall are these

Answer 4

theyre on the lateral wall.

Conchi are the outpouching of bone (turbinate) whereas meatuses are the spaces b/w the conchi and the lateral wall

Question 5

how many conchi and meatuses are there? name them

Answer 5

3 pairs (superior, middle, inferior)

Question 6

name the paranasal sinuses and their innervation

Answer 6

frontal, ethmoid and sphenoid (V1)

Maxillary (V2)

Question 7

where are the maxillary sinues in terms of surface anatomy

Answer 7

under the eyes

Question 8

where do the maxillary sinuses drain

Answer 8

middle meatus

Question 9

what drains into the inferior meatus

Answer 9

naso-lacrimal duct (this is why you get runny nose when cry)

Question 10

describe the blood supply of the nose

Answer 10

split into quandrants. Same for lateral and medial except for anterior quadrant.
Posterior = sphenopalatine artery
Superior = Ethmoidal artery
Inferior = Greater palatine artery
Ant (medial) = Labial
Ant (lateral) = Facial

Question 11

nerve supply (non olfactory) of nose

Answer 11

V1 for superior half.
V2 for inferior half.
Medial and lateral same