Nasa Cavities And Paranasal Sinuses Flashcards Preview

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Flashcards in Nasa Cavities And Paranasal Sinuses Deck (37):
1

What kind of cartilage is the allof nose

Fibro-areolar tissue

2

Why do u not use adrenaline near nasal cartilages

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

3

What is the philtrum

Indentation between nose and upper lip

4

What does the ethmoid bone contribute to the nasal cav

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

5

Why is a septal has aroma incised and drained

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

6

What I the epithelia of the vestibule of the nose

Keratinised stratified squamous for protection

7

What is the respiratory mucosa like in the nasal cav

Sec goblet cells
Cilia
Protection and moisture

8

What is the olfactory mucosa like in the nasal cav

Sense of smell
Need to be aq to get smell

9

What is the olfactory nerve

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

10

Where is the olfactory mucos

On be out lateral wall and septum

11

What su the sensory innervation of the nasal cav

Trigeminal

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


Maxillary v2 posteroinferior
- nasopalatine and grater palatine nerves

12

How does the Opthalmic artery supply arterial blood supply

Via anterior and posterior ethmoidal arteries on lateral wall and septum

13

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

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

14

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

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

15

What is kiesselbachs area

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

16

What are the conchae and what do they do

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

What are the meat uses in the nasal cav

Spaces under conchae
Sphenoethmoidal recess
Superior meatus
Middle meatus
Inferior meatus

Paranasal sinuses drain to these

18

What separates the right nd left cavities

Nasal septum

19

What forms the nasal septum

Perp plate of ethmoid
Vomer
Septal cartilage

20

What comes the roof of the nasal cav

Nasal bones
Crubiform plate of ethmoid

21

What is Resp epi

Pseudostratified columnar with cilia and goblet cells

22

What are Ostia

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

23

What are the paranasal sinuses

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

What epi lines the paranasal sinuses

Mucous secreting respiratory mucosa

25

What is the function of the paranasal sinuses

Secreting mucous
Help resonate voice
Lighten head
Buoyancy

26

Where does the frontal sinus drain to

Middle meatus

27

Where does the sphenoidal sinus drain to

Sphenoethmoidal recess

28

Where does the maxillary sinus drain to

Middle meatus

29

Where do the ethmoidal air cells drain to

Superior and Middle meatuses

30

What happens to lacrimal fluid drainage

Tears drains to nasolacrimal duct
This drains to inferior meatus

31

What is sinusitis

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

32

WhT are the causes of sinusitis

Infection
Allergy
Autoimmune issues block up leading to infection

33

What do the cilia of the RESP epi do

Waft mucous towards Ostia

34

What makes sinusitis painful

Affecting sensation from v1 And v2
Can get referred pain to teeth

35

How is the maxillary sinuses predisposed to becoming inflamed

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

36

What can happen when extract a maxillary molar

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

37

What kind of cartilage is nasal cartilage

Hyaline