Nose

Question 0

What is the internal structure of the nasal cavity ?

Answer 0

Roof
Floor
Medial wall-nasal septum
Lateral wall of the nasal cavity

Question 1

what is the function of the nose?

Answer 1

Warm, moisten and filter air before it goes into the lungs

Respiration, olfaction, filtration of dust, humidification of inspired air, receive secretions from paranasal sinuses and lacrimal ducts

Question 2

What are the 3 parts of the roof of the nasal cavity

Answer 2

• frontonasal
• sphenoidal
• ethmoidal

Question 3

What is the floor of the nasal cavity formed by?

Answer 3

• palatine process of the maxilla

* horizontal plate of the palatine bone

Question 4

What is the medial wall of the nasal cavity formed by?

Answer 4

The nasal septum ( part bony and part cartilaginous

Question 5

What are the 3 main components of the nasal septum?

Answer 5

• Vomer
• Septal cartilage
• Perpendicular plate of the ethmoid bone

Question 6

What is the function of the conchae?

Answer 6

To increase the membrane surface area with which air contest into contact

Question 7

What are paranasal sinuses?

Answer 7

Paired, air filled cavities in bone that is lines with Mucous membrane just like nasal cavity

Question 8

What is the function of paranasal sinuses?

Answer 8

Lighten skull bones
Act as sound resonators
Provide Mucous for nasal cavity

Question 9

What are the 4 paranasal sinuses?

Answer 9

Frontal
Maxillary
Ethmoidal
Sphenoidal

Question 10

What does the frontal sinus drain ?

Answer 10

Middle meatus

Question 11

What are properties of maxillary sinus?

Answer 11

Largest of the paranasal sinuses

Pyramidal in shape

Question 12

What does the maxillary sinus drain

Answer 12

Middle meatus

Question 13

What is so special about the ethmoidal sinuses?

Answer 13

Honeycomb structure

Made up of various small cavities in the ethmoidal labyrinth

Question 14

What does the ethmoidal sinus drain?

Answer 14

Anterior group drains middle meatus

Posterior group drains superior meatus

Question 15

What are features of the sphenoidal sinus?

Answer 15

Paired and located in the body of sphenoid bone

Drains into the roof of the nasal cavity via apertures on the posterior wall of the spheno-ethmoidal recess

Deep into the skull therefore important nerves around it

Question 16

What makes up the superior and middle conchae?

Answer 16

Ethmoid bone

Question 17

What makes up the inferior nasal conchae?

Answer 17

It has its own bone

Question 18

What is primary sinusitis ?

Answer 18

Involves allergies or an infection occurring in the sinus

Question 19

What is secondary sinusitis ?

Answer 19

Dental origin- occurs mainly in the maxillary sinus because maxillary teeth are in close proximity to the floor of the maxillary sinus

Question 20

What can secondary sinusitis result from ?

Answer 20

If a fracture occurs in one of the roots during removal of a maxillary molar tooth and proper retrieval method are not used, the broken piece root may be driven superiority into the maxillary sinus. This may introduce oral bacteria into the sinus creating maxillary sinusitis

The spread of infection from a peri apical abscess initiated by a maxillary posterior tooth that perforates the sinus floor to involve the sinus mucosa