Paranasal Sinuses

Question 1

What are the 4 paranasal sinuses?

Answer 1

frontal sinus, maxillary sinus, ethmoid air cells, & sphenoid sinus

Question 2

How many ethmoid air cells are on either side of the face?

Answer 2

7-9

Question 3

Label

Answer 3

Question 4

Label the sphenoid bone

Answer 4

Question 5

Label the sphenoid bone

Answer 5

1. Lesser wing
2. Body
3. Greater wing
4. Lateral pterygoid plate
5. Medial Pterygoid plate

Question 6

___ passes through the foramen spinosum

Answer 6

Middle meningeal artery

Question 7

Label

Answer 7

1. Frontal process
2. Zygomatic process
3. Body
4. Alveolar process
5. Palatine process

Question 8

Label

Answer 8

1. Frontal process
2. Infraorbital margin
3. Infraorbital foramen
4. Canine fossa
5. Zygomatic process
6. Incisive fossa
7. Canine eminence
8. anterior nasal spine

Question 9

Label

Answer 9

1. Frontal process
2. Lacrimal groove
3. Anterior lacrimal crest
4. anterior nasal spine
5. Incisive fossa
6. Canine eminence
7. canine fossa
8. Alveolar process
9. Alveolar process
10. Zygomatic process
11. Orbital surface
12. Infratemporal surface
13. maxillary tuberosity

Question 10

Label

Answer 10

1. Ethmoid crest
2. Middle meatus
3. Conchal crest
4. Inferior meatus
5. Maxillary hiatus
6. Incisive foramen
7. Palatine process
8. Maxillary tuberosity

Question 11

Label

Answer 11

1. Frontal process
2. Zygomatic process
3. Posterior superior alveolar foramen
4. Infratemporal surface
5. Maxillary tuberosity
6. Nasal crest
7. Palatine process

Question 12

Label

Answer 12

1. Palatine process
2. maxillary tuberosity
3. Zygomatic process

Question 13

Label

Answer 13

1. Palatine process
2. Frontal process
3. Orbital surface
4. Infraorbital groove
5. Infraorbital canal
6. Zygomatic process

Question 14

Label

Answer 14

1. Zygomatic recess
2. Infraorbital recess
3. alveolar recess
4. Orbital margin

Question 15

What’s the largest paranasal sinus?

Answer 15

Maxillary sinus

Question 16

Where’s maxillary sinus located? What’s its shape?

Answer 16

Located ENTIRELY within the body of the maxilla
Pyramid shaped (5 sided) w/ 3 recesses

Question 17

What are the walls of the maxillary sinus?

Answer 17

Posterior
Orbital (superior)
Facial (anterior)
Medial (lateral nasal wall)
Bucco-alveolar (inferior)

Question 18

Example of Infection that spreads from molar teeth to mucous of maxillary sinus

Answer 18

odontogenic sinusitis

Question 19

When does the max sinus develop? When does it expand?

Answer 19

Develops embryologically at 10th week of gestation
Expands by 5th month
Neumatizes (has air filled cavities) at birth

Question 20

Where is the max sinus located in children?

Answer 20

level of palatine & as you grow, they grow apart

Question 21

Stuffy nose is associated w/ which sinus?

Answer 21

Maxillary

Question 22

Main functions of the maxillary sinus

Answer 22

• Humidifying & warming inspired air
• Immune defense
• Nitric oxide production

Question 23

What are the 2 blood supply venous drainages of the max sinus?

Answer 23

Pterygoid venous plexus & Facial vein anteriorly

Question 24

Infection of the max sinus can spread to

Answer 24

cavernous sinus

Question 25

What's inflammation in the maxillary sinus called?

Answer 25

Cavernous sinus thrombosis

Question 26

What is the sensory, sympathetic and parasympathetic n. supply to the max sinus?

Answer 26

- Sensory: comes from maxillary nerve - Sympathetic: comes from superior cervical ganglion - Parasympathetic: comes from sphenopalatine ganglion

Question 27

In the L medial wall of the max sinus, ___ is in the top half & ___ is in the bottom half

Answer 27

top half = nose bottom half = palate

Question 28

What are the branches of the maxillary nerve?

Answer 28

Posterior superior dental branch Middle superior dental branch Infraorbital branch

Question 29

Label

Answer 29

1. Crista galli 2. Cribiform plate 3. Superior nasal concha 4. Perpendicular plate 5. Middle nasal concha 6. Orbital plate

Question 30

Label

Answer 30

Lateral mass of ethmoid

Question 31

Label

Answer 31

1. Crista galli 2. Air cells 3. Air cells 4. Perpendicular plate 5. orbital plate 6. Ethmoid bulla 7. Middle nasal concha

Question 32

Label

Answer 32

1. Crista galli 2. Air cells 3. Cribiform plate 4. Orbital plate

Question 33

Label

Answer 33

1. Crista galli 2. Orbital plate 3. Perpendicular plate 4. Middle nasal concha 5. Air cells

Question 34

Label

Answer 34

1. Crista galli 2. Ethmoid bulla 3. Uncinate process 4. Middle nasal concha 5. Superior nasal concha 6. Perpendicular palte

Question 35

Label

Answer 35

1. Crista galli 2. Perpendicular plate

Question 36

What makes up the side of the nose?

Answer 36

Nasal septum Vomer Perpendicular plate

Question 37

Label

Answer 37

1. Superior nasal concha 2. Middle nasal concha

Question 38

Label

Answer 38

1. Ethmoid bulla 2. Ucinate process

Question 39

Label

Answer 39

1. Superior nasal concha 2. Middle nasal concha 3. Perpendicular plate

Question 40

Symptoms of sinus disease

Answer 40

pain in maxillary teeth

Question 41

Dental problems causing sinus disease

Answer 41

Endodontic problems/non-vital teeth Periodontal problems Dental implant issues tumor/swelling/neoplasms Dental structures (root tips, endo filling, implants) displaced into sinus

Question 42

___ needs alveolar bone implant

Answer 42

Caldwell-luc operation

Question 43

What is oro-antral fistula? What can it result form?

Answer 43

non-healing, unnatural opening from the sinus into oral cavity Trauma Periodontitis Peri-implantitis Endodontic disease/necrotic tooth pulp Bad implant placement Surgery: extractions, root-end surgery, implants, periodontal flaps