Nose and sinuses Flashcards Preview

Anatomy > Nose and sinuses > Flashcards

Flashcards in Nose and sinuses Deck (49):
1

What is the midline structure in yellow in this picture?

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Crista galli of the ethmoid bone

2

What is the name of the pale yellow bones in this image?

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Frontal bones

3

What is the name of the pink bones in this image?

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Sphenoid bone

4

What is the name of the orange bones in this image?

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Temporal bones

5

What is the name of the bone shown in green here?

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Ethmoid bone

6

Which bone are the superior and middle conchae formed from?

Ethmoid bone

7

Which bone is a posterior continuation of the perpendicular plate of the ethmoid bone?

Vomer

8

Which two structures form the bony part of the nasal septum/medial wall?

Perpendicular plate of the ethmoid bone

Vomer

9

Which Le Fort fracture is shown here?

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Le Fort 1

10

Which Le Fort fracture is shown here?

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Le Fort 2

11

Which Le Fort fracture is shown here?

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Le Fort 3

12

Why must a septal haematoma be incised and drained?

To prevent avascular necrosis of the hyaline cartilidge which depends on the mucosa for diffusion of nutrients

13

Which kind of epithelium lines each of these areas?

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14

Which structure is being indicated here?

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Soft palate

15

Which structure is being indicated here?

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Epiglottis

16

Which bony structure is being indicated here?

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Cribiform plate

17

Which bony structure is being indicated here?

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Inferior concha

18

Which bony structure is being indicated here?

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Middle concha

19

Which bony structure is being indicated here?

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Superior concha

20

Which hollow space is being indicated here?

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Maxillary antrum

21

Which bone is forming this part of the nasal septum?

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Perpendicular plate of the ethmoid bone

22

Which bone is forming this part of the nasal septum?

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Vomer

23

Which bone is forming this part of the nasal septum?

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Palatine bone

24

What is the name of this bony projection?

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Christa galli

25

Which bone forms this part of the lateral wall of the nasal cavity?

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Maxilla

26

Which bone is forming this part of the lateral wall of the nasal cavity and what two bony structures is it forming?

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Ethmoid bone

Superior and middle conchae

27

Which nerve provides the special sense of smell?

CN I, olfactory nerve

28

Which structures are being indicated here and how does their structure affect their function?

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Olfactory nerve function is to provide special sense of smell

Olfactory sensor cells have penetrated the cribiform plate to detect smell in the olfactory mucosa of the nasal cavity

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29

Which structure is being indicated here?

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Olfactory bulb

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30

What is the sensory supply to the nasal cavity?

The maxillary nerve

CNV1 anterosuperiorly

CNV2 posteroinferiorly

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31

What is the aterial supply to the nasal cavity?

Nasal branches of the opthalmic artery - this is a branch of the internal carotid

Nasal branch of facial artery

Nasal branches of maxillary artery - these are branches of the external carotid

32

What is Keisselbach's or Little's area?

An aterial anastamoses on the nasal septum that is a common site for nosebleeds

33

Which structures are being indicated here?

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34

Which structure is being indicated here?

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Sphenoid sinus

35

What are the paranasal sinuses?

Air-filled spaces within the major bones surrounding the nasal cavities

36

What kind of epithelium lines the paranasal sinuses?

Mucous-secreting respiratory mucosa

37

What are ostia and where are they located?

Located in the lateral walls of the nasal cavity

Allow drainage of the paranasal sinuses into the meatus/recesses of the nasal cavity

38

Where does mucous from the sphenoidal sinus drain?

Anteriorly into the sphenoethmoidal recess

39

Where does mucous from the ethmoida sinuses drain?

Superior and middle meatuses

40

Where does mucous from the frontal sinus drain into?

The middle meatus

41

Where does mucous from the antrum drain into?

The middle meatus

42

Which structure drains into the inferior meatus?

Nasolacrimal duct

43

What is the nasolacrimal duct?

A soft tissue tube in a bony canal of the maxilla that drains tears continuously from the medial side of the eye into the inferior meatus of the nasal cavity

44

What is sinusitis?

Inflammation of the mucous of the paranasal sinuses

45

Why are the maxillary antra particularly susceptible to sinusitis?

The ostia are located superiorly, so mucous has to drain against gravity

The roots of the upper teeth can spread infection from a dental abscess to the maxillary sinus

46

What may predispose to sinusitis if formed after extraction of a tooth?

Oro-antral fistula

47

How might maxillary sinusitis present and why?

Toothache

Referred pain - maxilla, mandible, antral mucosa and the teeth all supplied by CN V

48

Which structure is being indicated here?

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The opening of the eustachian tube into the nasopharynx

49