nasal anatomy 1 Flashcards Preview

Head and Neck (Ben Gray) > nasal anatomy 1 > Flashcards

Flashcards in nasal anatomy 1 Deck (36)
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1
Q

what are some functions of the nose?

A
respiration
filtration
humidification
olfaction
reception of sinus and eye secretions
2
Q

what type of mucose is present in the nose?

A

columnar ciliated

there is a squamo columnar junction

3
Q

how much of the nose is “bony”

A

1/3

4
Q

how much of the nose is “cartilaginous”?

A

2/3

5
Q

what are the nasal bones?

A

frontal processes of maxillae

nasal part of frontal bones

6
Q

what are the 3 different cartilages in the nose?

A

lateral x 2
septal
alar x 2

7
Q

what is the anatomical name for the nostril?

A

anterior naris

8
Q

what is the midline partition of the nose?

A

septal cartilage - which is a perpendicular plate of the ethmoid vomer

9
Q

what is a risk of the nasal septum becoming deviated?

A

septal haematoma

10
Q

what are the nasal turbinates?

A

Turbinates are two spongy curled bones that protrude into the nasal passages.

11
Q

what are the 4 pairs of turbinates?

A

supreme
superior
middle
inferior

12
Q

what part of the nose do the turbinates form?

A

the lateral walls

13
Q

what forms the roof of the nose?

A

cribriform plate

14
Q

what forms the floor of the nose?

A

hard palate

15
Q

what lines the nasopharynx?

A

muco ciliary lining

16
Q

what are the boundaries of the nasopharynx?

A

choana
sphenoid sinuses
prevertebral fascia and muscle
soft palate

17
Q

what are some imprtant contents of the nasopharynx?

A

eustachian openings

adenoids

18
Q

what arteries supply the nose?

A

sphenopalatine artery
greater palatine artery
acending labial artery
ethmoid arteries

19
Q

where is the capillary plexus located?

A

mucosal lining of septum

20
Q

clinical term for a nosebleed?

A

epistaxis

21
Q

what nerves supply the nose?

A
olfactory nerve
infraorbital nerve (branch of 5th cranial)
22
Q

what may happen as a result of trauma to the olfactory nerve?

A

hyposmia

anosmia

23
Q

what can happen as a result of damage to the 5th cranial nerve?

A

paraesthesia

24
Q

what are sinuses filled with?

A

air

25
Q

what are sinuses lined with?

A

muco-ciliary lining which is continuous with the nose

26
Q

name 4 sinuses in the head

A

frontal sinus
ethmoid sinus x2
sphenoidal sinus
maxillary sinus x2

27
Q

where does the frontonasal duct drain to?

A

middle meatus

28
Q

where do the posterior ethmoids drain to?

A

superior meatus

29
Q

where do the middle/anterior ethmoids drain to

A

middle meatus

30
Q

where does the maxillary sinus drain to?

A

middle meatus

31
Q

where does the nasolacrimal duct drain to?

A

inferior meatus

32
Q

what pathways do the nasal sinuses drain by?

A

natural mucociliary pathways

33
Q

what is an important relation of the frontal sinus?

A

anterior cranial fossa

34
Q

what is an important relation of the ethmoid sinuses?

A

anterior cranial fossa (cribiform plate)

35
Q

what are some important relations of the maxillary sinuses?

A

orbits

oral cavity/teeth

36
Q

what are some important relations of the sphenoid sinuses?

A

optic nerve
ICA
pituitary gland