The paranasal sinuses

Question 1

Function

Answer 1

Reservoir of humidified air 
Decrease the weight of the skull 
Vocal resonance 
Covered in Mucosa with immune properties 
Crumple zones

Question 2

What are they

Answer 2

Air spaces in the respiratory part of the nasal cavity

Question 3

Innervation of the frontal sinus

Answer 3

CN V1

Question 4

Innervation of the sphenoid?

Answer 4

CN V1 and CN V2

Question 5

Innervation of the ethmoidal air cells?

Answer 5

CN V1

Question 6

Innervation of the maxillary

Answer 6

CN V2

Question 7

Which sinus has most complications with drainage?

Answer 7

Maxillary.

The opening is not in the most inferior space.

Question 8

Which sinus is indented with teeth sockets?

Answer 8

The maxillary

Question 9

Pathology of sinusitis

Answer 9

-Usually self-limiting
-At times can be chronic:
Inflammation causes the sinus ducts to become blocked
Mucous builds up
Mucous can become infected
Can lead to further inflammation- damage
Damage can lead to chronic damage e.g. the formation of polyps
Further blockage

Question 10

Treatment for sinusitis?

Answer 10

• Anti-allergy treatment : remove triggers and anti-histamines
• Treat infection
• Reduce inflammation
• Surgery to remove polyps, clear up blockage

Question 11

Consequences of sinusitis?

Answer 11

Consequences:

• Can damage lamina papyracea- damage to orbital
• Damage to skull- CSF damage

Question 12

What is the lamina papyracea?

Answer 12

Thin sheet between the Ethmoid sinuses and the orbit