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ENT Year 2 Medicine > Nasal Cavity > Flashcards

Flashcards in Nasal Cavity Deck (42)
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1

What are the three conchae within the cavity called?

Superior
Middle
Inferior

2

What is the function of the conchae?

Create turbulence to hold the air within the cavity long enough to stimulate the olfactory receptors.

3

What makes up the nasal septum?

Septal cartilage- anterior
Perpendicular plate of the ethmoid -Superior
Vomer - Inferior and posterior

4

What cartilage makes up the posterior and inferior of the nasal septum?

Vomer

5

What cartilage makes up the superior portion of the nasal septum?

Perpendicular plate of the ethmoid

6

What cartilage makes up the anterior portion of the nasal septum?

Septal cartilage

7

What foramens enter the nasal cavity?

Anterior and posterior ethmoidal foramen
Sphenopalatine foramen
Incisive foramen

8

Where is the anterior and posterior ethmoidal foramen situated?

Superior aspect of the nasal cavity

9

Where is the sphenopalatine foramen situated?

Posterior aspect

10

Where is the incisive foramen situated?

Inferior passes through the midline

11

Which area of the nasal cavity has the most vascular innervation?

Kiesselbachs plexus
-littles area

12

How many arterial inputs does kiesselbachs plexus have?

5 arterial inputs
Anterior and posterior ethmoidal artery
Sphenopalatine artery
Greater palatine artery
Septal branch of superior labial artery

13

Where do the anterior and posterior ethmoidal arteries come from?

Ophthalmic artery, pass through ethmoidal foramen

14

Where does the sphenopalatine come from?

Derives from the maxillary artery
Passes through the sphenopalatine foramen

15

Where does the greater palatine artery come from?

Derives from the maxillary artery
Supplies the hard palate befpore passing superiorly via the incisive foramen.

16

Where does the septal branch of the superior labial artery come from ?

Derives from the facial artery

17

What mucosa makes up the nasal vestibule?

Stratified squamous epithelium
transitions from keratinised to non keratinised

18

What is the nasal vestibule?

Area at the entrance to the nasal cavity

19

What mucosa makes up the Nasal cavity?

Respiratory epithelium
Olfactory epithelium

20

Where in the nasal cavity is olfactory epithelium found?

Lining the superior aspect

21

Where in the nasal cavity is respiratory epithelium found?

Lining everywhere but the superior aspect and nasal vestibule.

22

What area is found superior to the superior conchae?

Sphenoethmoidal reccess

23

What sinus drains into the sphenoethmoidal recess?

The sphenoid sinus

24

What lies inferior to the superior conchae?

The superior meatus

25

What sinus drains into the superior meatus?

The posterior ethmoidal sinus

26

What lies inferior to the middle conchae?

The middle meatus

27

What three sinus's drain into the middle conchae?

Anterior ethmoidal sinus
Frontal sinus
Maxilliary sinus

28

What lies inferiorly to the inferior conchae?

The inferior meatus

29

What sinus drains into the inferior meatus?

The nasolacrimal duct

30

What cranial nerve is involved in the sense of smell?

CN I - Olfactory nerve