9 - bones and cartilages of the nose

Question 1

which bone does the nasal apertures articulate superiorly to?

Answer 1

frontal bone

Question 2

what is the “extension” of the nose?

Answer 2

due to plates of cartilages which project anteriorly from nasal bones

Question 3

what is the roof of the nose formed of? (anterior to posterior)

Answer 3

nasal bones
part of frontal bone
ethmoid bone
body of sphenoid bone

Question 4

how is the floor of the nasal cavity formed?

Answer 4

the palatine process of the maxillae and the palatine bones which form the hard palate

Question 5

which 2 bones form the nasal septum?

Answer 5

vomer bone 
ethmoid bone (perpendicular plate)

Question 6

which structure lies anterior to these 2 bones and completes the nasal septum?

Answer 6

septal cartilage

Question 7

CLINICAL - result of deviated nasal septum?

Answer 7

leads to obstruction of 1 side of the nasal cavity

• > impairment of the normal drainage
• > recurrent sinus infections

Question 8

name 5 parts of the ethmoid bone?

Answer 8

cribriform plate 
crista gali 
central plate 
superior and middle conchae 
ethmoid air cells

Question 9

what structure passes through the cribriform plate?

Answer 9

olfactory n

Question 10

what structure attaches to the crista gali?

Answer 10

falx cerebri