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Flashcards in Nasal anatomy and physiology Deck (45):
1

What are the functions of the nasal cavity?

Filter, humidify and warm air
Sense of smell

2

What are the 7 parts of the external nose?

Root
Dorsum
Tip
Ala
Nostril
Septum
Philtrum (between upper lip and nose)

3

What bones are associated with the nose?

Maxilla
Nasal bones
Ethmoid bone
Vomer bone
Inferior nasal concha

4

In which bone is the cribriform plate found?

Ethmoid

5

What parts of the nasal cavity does the ethmoid bone form?

Roof, septum and lateral walls

6

What bones form the roof of the nasal cavity?

Ethmoid, frontal and nasal

7

What bones for the lateral borders of the nasal canal?

Ethmoid, maxilla, palatine bone and inferior nasal concha.

8

What bones form the floor of the nasal cavity?

Maxilla and palatine bones

9

What bones form the medial borders of the nasal cavity?

Vomer and ethmoid

10

Where does a Le Fort I fracture run?

Base of nose along maxilla

11

Where does a Le Fort II fracture run?

Root of nose down to mandible

12

Where does a Le Fort III fracture run?

Root of nose through eye sockets

13

What three types of epithelium are found in the nasal cavity?

Stratified squamous (in vestibule as it is skin)
Respiratory (in most of the rest)
Olfactory (in posterior roof and superior concha)

14

Where is stratified squamous epithelium found in the nose?

In the vestibules

15

Where is respiratory epithelium found in the nose?

In most of the cavity

16

Where is olfactory epithelium found in the nose?

In the superior posterior part/superior concha

17

What is the somatic innervation of the nasal cavity?

V1/ophthalmic- tip of nose to sphenoid sinus
V2/maxillary- everything under that

18

What is epistaxis?

Nose bleed

19

What are the major arteries of the nose?

Anterior ethmoid artery
Posterior ethmoid artery
Lateral nasal artery
Greater palatine artery
Sphenopalatine artery

20

What is Kiesselbach's area?

An area of anastomosis on the septum where nose bleeds (epistaxis) comes from.

21

How many conchae are there in the nose?

3:
Superior
Middle
Inferior

22

What bone forms the basis for the superior and middle conchae?

Ethmoid

23

What bone forms the basis for the inferior concha?

Inferior nasal concha

24

What is a turbula?

A concha with its mucosal covering

25

What is found above the superior concha?

Sphenoethmoid recess

26

What separates the superior concha from the middle?

Superior meatus

27

What separates the middle concha from the inferior?

Middle meatus

28

What is found below the inferior concha?

Inferior meatus

29

What kind of airflow occurs through the nostrils?

Turbulent

30

What additional air spaces are linked to the nasal cavity?

Sinuses

31

How many pairs of sinuses do we have?

4:
Frontal
Maxillary
Ethmoid
Sphenoid

32

What lines sinuses?

Respiratory epithelium

33

What happens when a sinus gets clogged?

Sinusitis

34

Where do the sphenoid sinuses drain?

Sphenoethmoid recess

35

Where do the frontal sinuses drain?

Middle meatus

36

Where do the ethmoid air cells drain?

Superior and middle meatus
Ethmoid bulla

37

Where do the maxillary sinuses drain?

Middle meatus

38

What drains into the sphenoethmoid recess?

Sphenoid sinus

39

What drains into the superior meatus?

ethmoid air cells

40

What drains into the middle meatus?

Frontal sinuses
Maxillary sinuses
Ethmoid air cells

41

What drains into the ethmoid bulla?

Ethmoid air cells

42

Where is the semilunar hiatus found?

On the inferior concha under the middle meatus

43

Where is the ethmoid bulla found?

On the inferior concha between the semilunar hiatus and middle meatus.

44

What drains into the inferior meatus?

Nasolacrimal ducts.

45

Where can a connection between a sinus and tooth occur?

Maxillary sinus