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Anatomy > Nose and sinuses > Flashcards

Nose and sinuses Flashcards

1
Q

What is the midline structure in yellow in this picture?

A

Crista galli of the ethmoid bone

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2
Q

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

A

Frontal bones

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3
Q

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

A

Sphenoid bone

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4
Q

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

A

Temporal bones

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5
Q

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

A

Ethmoid bone

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6
Q

Which bone are the superior and middle conchae formed from?

A

Ethmoid bone

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7
Q

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

A

Vomer

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8
Q

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

A

Perpendicular plate of the ethmoid bone

Vomer

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9
Q

Which Le Fort fracture is shown here?

A

Le Fort 1

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10
Q

Which Le Fort fracture is shown here?

A

Le Fort 2

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11
Q

Which Le Fort fracture is shown here?

A

Le Fort 3

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12
Q

Why must a septal haematoma be incised and drained?

A

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

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13
Q

Which kind of epithelium lines each of these areas?

A
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14
Q

Which structure is being indicated here?

A

Soft palate

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15
Q

Which structure is being indicated here?

A

Epiglottis

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16
Q

Which bony structure is being indicated here?

A

Cribiform plate

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17
Q

Which bony structure is being indicated here?

A

Inferior concha

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18
Q

Which bony structure is being indicated here?

A

Middle concha

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19
Q

Which bony structure is being indicated here?

A

Superior concha

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20
Q

Which hollow space is being indicated here?

A

Maxillary antrum

21
Q

Which bone is forming this part of the nasal septum?

A

Perpendicular plate of the ethmoid bone

22
Q

Which bone is forming this part of the nasal septum?

A

Vomer

23
Q

Which bone is forming this part of the nasal septum?

A

Palatine bone

24
Q

What is the name of this bony projection?

A

Christa galli

25
Q

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

A

Maxilla

26
Q

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

A

Ethmoid bone

Superior and middle conchae

27
Q

Which nerve provides the special sense of smell?

A

CN I, olfactory nerve

28
Q

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

A

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

29
Q

Which structure is being indicated here?

A

Olfactory bulb

30
Q

What is the sensory supply to the nasal cavity?

A

The maxillary nerve

CNV1 anterosuperiorly

CNV2 posteroinferiorly

31
Q

What is the aterial supply to the nasal cavity?

A

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
Q

What is Keisselbach’s or Little’s area?

A

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

33
Q

Which structures are being indicated here?

A
34
Q

Which structure is being indicated here?

A

Sphenoid sinus

35
Q

What are the paranasal sinuses?

A

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

36
Q

What kind of epithelium lines the paranasal sinuses?

A

Mucous-secreting respiratory mucosa

37
Q

What are ostia and where are they located?

A

Located in the lateral walls of the nasal cavity

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

38
Q

Where does mucous from the sphenoidal sinus drain?

A

Anteriorly into the sphenoethmoidal recess

39
Q

Where does mucous from the ethmoida sinuses drain?

A

Superior and middle meatuses

40
Q

Where does mucous from the frontal sinus drain into?

A

The middle meatus

41
Q

Where does mucous from the antrum drain into?

A

The middle meatus

42
Q

Which structure drains into the inferior meatus?

A

Nasolacrimal duct

43
Q

What is the nasolacrimal duct?

A

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
Q

What is sinusitis?

A

Inflammation of the mucous of the paranasal sinuses

45
Q

Why are the maxillary antra particularly susceptible to sinusitis?

A

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
Q

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

A

Oro-antral fistula

47
Q

How might maxillary sinusitis present and why?

A

Toothache

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

48
Q

Which structure is being indicated here?

A

The opening of the eustachian tube into the nasopharynx

49
Q
A

Anatomy (22 decks)

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