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Anatomy > Nasa Cavities And Paranasal Sinuses > Flashcards

Nasa Cavities And Paranasal Sinuses Flashcards

1
Q

What kind of cartilage is the allof nose

A

Fibro-areolar tissue

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2
Q

Why do u not use adrenaline near nasal cartilages

A

Cartilage is a vascular doesn’t have own blood supply relies on nutrient diffusion from skin
Adrenaline causes vasoconstriction

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3
Q

What is the philtrum

A

Indentation between nose and upper lip

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4
Q

What does the ethmoid bone contribute to the nasal cav

A

Roof - crubiform plate and Cristae gali
Lateral wall - superior and Middle conchae, ethmoidal air cells
Septum - perp plate of ethmoid

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5
Q

Why is a septal has aroma incised and drained

A

Prevent a vascular necrosis of septal hyaline cartilage which depends on diffusion of nutrients from its attached nasal mucosa

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6
Q

What I the epithelia of the vestibule of the nose

A

Keratinised stratified squamous for protection

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7
Q

What is the respiratory mucosa like in the nasal cav

A

Sec goblet cells
Cilia
Protection and moisture

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8
Q

What is the olfactory mucosa like in the nasal cav

A

Sense of smell

Need to be aq to get smell

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9
Q

What is the olfactory nerve

A

Cranial nerve 1
Receptor cells pass through crubiform plate of ethmoid bone
In olfactory mucosa
Have olfactory bulb and olfactory tract

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10
Q

Where is the olfactory mucos

A

On be out lateral wall and septum

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11
Q

What su the sensory innervation of the nasal cav

A

Trigeminal

Opthalmic v1 anterosupriorly
- anterior and posterior branches of ethmoidal nasociliary nerve

Maxillary v2 posteroinferior
- nasopalatine and grater palatine nerves

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12
Q

How does the Opthalmic artery supply arterial blood supply

A

Via anterior and posterior ethmoidal arteries on lateral wall and septum

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13
Q

How does the maxillary artery deliver arterial supply to e nasal cav

A

Via sphenopalatine and greater palatine arteries same on later wall and septum

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14
Q

How does the facial artery supply arterial blood supply to the nasal cav

A

Via lateral nasal branch of facial or SEPTAL BRANCH LF SUPEIROR LABIAL ARTERY

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15
Q

What is kiesselbachs area

A 
An arterial anastamosis on nasal septum only 
A common site of epistaxis - nosebleeds 
Contributing arteries -
Labial
Ethmoidal 
Greater palatine
Sphenopalatine
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16
Q

What are the conchae and what do they do

A 
Superior and Middle are part of ethmoid
Inferior is individual 
Improve gas exchange as turbulate the air 
War a nd humidfy air 
Rid bacteria and dirt 
Increase sa
17
Q

What are the meat uses in the nasal cav

A 
Spaces under conchae 
Sphenoethmoidal recess
Superior meatus 
Middle meatus 
Inferior meatus

Paranasal sinuses drain to these

18
Q

What separates the right nd left cavities

A

Nasal septum

19
Q

What forms the nasal septum

A

Perp plate of ethmoid
Vomer
Septal cartilage

20
Q

What comes the roof of the nasal cav

A

Nasal bones

Crubiform plate of ethmoid

21
Q

What is Resp epi

A

Pseudostratified columnar with cilia and goblet cells

22
Q

What are Ostia

A

Holes

Recesses and meatuses of lateral walls allowing drainage of mucous from paranasal sinuses

23
Q

What are the paranasal sinuses

A

Air filled spaces
Frontal - 2 of them sep by bony septum

Maxillary - 2 sep

Ethmoid - 2 sets have ethmoidal air cells lots. Of little spaces

Sphenoid - vary

24
Q

What epi lines the paranasal sinuses

A

Mucous secreting respiratory mucosa

25
Q

What is the function of the paranasal sinuses

A

Secreting mucous
Help resonate voice
Lighten head
Buoyancy

26
Q

Where does the frontal sinus drain to

A

Middle meatus

27
Q

Where does the sphenoidal sinus drain to

A

Sphenoethmoidal recess

28
Q

Where does the maxillary sinus drain to

A

Middle meatus

29
Q

Where do the ethmoidal air cells drain to

A

Superior and Middle meatuses

30
Q

What happens to lacrimal fluid drainage

A

Tears drains to nasolacrimal duct

This drains to inferior meatus

31
Q

What is sinusitis

A

Infection/inflammation of the mucosa of paranasal sinuses
Can involve 1/more sinuses
There can be acute or chronic

32
Q

WhT are the causes of sinusitis

A

Infection
Allergy
Autoimmune issues block up leading to infection

33
Q

What do the cilia of the RESP epi do

A

Waft mucous towards Ostia

34
Q

What makes sinusitis painful

A

Affecting sensation from v1 And v2

Can get referred pain to teeth

35
Q

How is the maxillary sinuses predisposed to becoming inflamed

A

Ostia being located superiorly in medial wall of sinus compared to floor
Therefore mucous has to drain against gravity difficult to drain

36
Q

What can happen when extract a maxillary molar

A

Oroantral fistula which. Is a hole between oral cav and maxillary sinus
This can cause infection

37
Q

What kind of cartilage is nasal cartilage

A

Hyaline

Anatomy (44 decks)

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