7.1 The Nose and Paranasal Sinuses Flashcards Preview

Semester 4- Head and Neck > 7.1 The Nose and Paranasal Sinuses > Flashcards

Flashcards in 7.1 The Nose and Paranasal Sinuses Deck (27):
1

Name 4 functions of the nose

Smell
Humidify air
Respire
Eliminate paranasal sinuses and nasolacrimal ducts

2

Name the bones which make up the bony part of the nose

Nasal bone
Maxillary bones
Frontal bone

3

Name the 2 cartilages found in the nose

Septal cartilage
Alar cartilage

4

Why do fractures to the nose take a long time to heal?

Cartilage heals slowly due to a poor blood supply

5

What is the medial wall of the nose made of?

Made of cartilage and bone

6

What is the condition called when the medial septum of the nose undergoes necrosis?

Saddle nose deformity

7

Describe the structure of the lateral walls of the nasal cavity

3 bony plates called conchae leading to the opening into the nasal cavity

8

What is the function of the conchae?

Create turbulent air flow which heats and humidifies the air

9

Which 3 groups of structures drain into the nasal cavity?

Sinuses
Lacrimal apparatus
Middle ear

10

Name the 3 structures which enter into the nasal cavity at the semilunar hiatus at the level of the middle meatus

Frontal sinus
Maxillary sinus
Anterior ethmoidal sinus

11

Name the structure which enters into the nasal cavity at the level of the superior meatus

Posterior ethmoidal sinus

12

Name the 2 structures which enter into the nasal cavity at the level of the inferior meatus

Nasolacrimal duct
Eustachian tube

13

What is the cribriform plate?

Part of the ethmoid bone with many perforations which allow fibres of the olfactory nerve to pass through

14

Which structures pass through the sphenopalatine foramen?

Sphenopalatine artery
Nasopalatine nerve
Superior nasal nerve

15

What is the incisive canal?

Pathway between the nasal cavity and oral cavity

16

What structures pass through the incisive canal?

Nasopalatine nerve
Greater palatine nerve

17

Which branches of the internal and external carotids supply the nose?

Ophthalmic artery
Maxillary artery
Facial artery

18

What is epistaxis?

Nosebleeds

19

Where is epitaxis most likely to occur?

Anterior nasal cavity known as Kiesselbach triangle

20

Which nerve innervates the special sensory regions of the nose?

Olfactory nerve

21

Which nerves give sensory innervation to the inner nose?

Ophthalmic nerve --> branches of nasocilliary nerve
Maxillary nerve --> nasopalatine nerve

22

Which nerves give sensory innervation to the outer nose?

Infraorbital nerve
External nasal nerve

23

Name the 4 paranasal sinuses

Frontal
Sphenoid
Ethmoid
Maxillary

24

How can infection pass from the frontal sinus to the maxillary sinus?

The opening of the frontal sinus is directly above the opening to the maxillary sinus

25

What is rhinitis?

Inflammation of the nasal mucosa leading to swelling and increased volume of secretion

26

What is a nasal polyp? What symptoms do they cause?

Side effect of chronic rhinitis. They can cause nasal obstruction leading to snoring and sleep apnoea

27

What is sinusitis?

Inflammation of the mucosal lining of the sinuses caused by infection.