Nasal Cavity

Question 1

What are the three conchae within the cavity called?

Answer 1

Superior
Middle
Inferior

Question 2

What is the function of the conchae?

Answer 2

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

Question 3

What makes up the nasal septum?

Answer 3

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

Question 4

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

Answer 4

Vomer

Question 5

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

Answer 5

Perpendicular plate of the ethmoid

Question 6

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

Answer 6

Septal cartilage

Question 7

What foramens enter the nasal cavity?

Answer 7

Anterior and posterior ethmoidal foramen
Sphenopalatine foramen
Incisive foramen

Question 8

Where is the anterior and posterior ethmoidal foramen situated?

Answer 8

Superior aspect of the nasal cavity

Question 9

Where is the sphenopalatine foramen situated?

Answer 9

Posterior aspect

Question 10

Where is the incisive foramen situated?

Answer 10

Inferior passes through the midline

Question 11

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

Answer 11

Kiesselbachs plexus

-littles area

Question 12

How many arterial inputs does kiesselbachs plexus have?

Answer 12

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

Question 13

Where do the anterior and posterior ethmoidal arteries come from?

Answer 13

Ophthalmic artery, pass through ethmoidal foramen

Question 14

Where does the sphenopalatine come from?

Answer 14

Derives from the maxillary artery

Passes through the sphenopalatine foramen

Question 15

Where does the greater palatine artery come from?

Answer 15

Derives from the maxillary artery

Supplies the hard palate befpore passing superiorly via the incisive foramen.

Question 16

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

Answer 16

Derives from the facial artery

Question 17

What mucosa makes up the nasal vestibule?

Answer 17

Stratified squamous epithelium

transitions from keratinised to non keratinised

Question 18

What is the nasal vestibule?

Answer 18

Area at the entrance to the nasal cavity

Question 19

What mucosa makes up the Nasal cavity?

Answer 19

Respiratory epithelium

Olfactory epithelium

Question 20

Where in the nasal cavity is olfactory epithelium found?

Answer 20

Lining the superior aspect

Question 21

Where in the nasal cavity is respiratory epithelium found?

Answer 21

Lining everywhere but the superior aspect and nasal vestibule.

Question 22

What area is found superior to the superior conchae?

Answer 22

Sphenoethmoidal reccess

Question 23

What sinus drains into the sphenoethmoidal recess?

Answer 23

The sphenoid sinus

Question 24

What lies inferior to the superior conchae?

Answer 24

The superior meatus

Question 25

What sinus drains into the superior meatus?

Answer 25

The posterior ethmoidal sinus

Question 26

What lies inferior to the middle conchae?

Answer 26

The middle meatus

Question 27

What three sinus's drain into the middle conchae?

Answer 27

Anterior ethmoidal sinus Frontal sinus Maxilliary sinus

Question 28

What lies inferiorly to the inferior conchae?

Answer 28

The inferior meatus

Question 29

What sinus drains into the inferior meatus?

Answer 29

The nasolacrimal duct

Question 30

What cranial nerve is involved in the sense of smell?

Answer 30

CN I - Olfactory nerve

Question 31

Where do the olfactory nerves pass through and innervate?

Answer 31

They pass through the cribiform plate of the ethmoid bone, and innervate the olfactory epithelium.

Question 32

What is the name of the ganglion located superiorly to the ethmoid plate?

Answer 32

The olfactory bulb

Question 33

From the olfactory bulb where does the action potential travel?

Answer 33

Along the olfactory tract

Question 34

What nerves are involved in the general somatic sensation within the nasal cavity?

Answer 34

CN V1 - Ophthalmic division of the trigeminal nerve | CN V2- Maxillary division of the trigeminal nerve

Question 35

What other name does CNV1 go by within the nasal cavity?

Answer 35

Anterior ethmoidal nerve

Question 36

What other name does CNV2 go by within the nasal cavity?

Answer 36

Nasopalatine nerve

Question 37

Where does the Nasopalatine nerve pass through to enter the nasal cavity?

Answer 37

Sphenopalatine foramen

Question 38

Where does CN V1 innervate?

Answer 38

Anterosuperior cavity

Question 39

Where does CN V2 innervate?

Answer 39

Postoinferior cavity

Question 40

Where do both CN V1 and V2 synapse?

Answer 40

Trigeminal ganglion

Question 41

How does CN V1 enter the cranial cavity?

Answer 41

Superior orbital fissure

Question 42

How does CN V2 enter the cranial cavity?

Answer 42

Foramen Rotundum