Facial skeleton

Question 1

How many bones make up the facial skeleton

Answer 1

16

Question 2

What can the facial skeleton be split into

Answer 2

Thirds:
Upper facial skeleton
Middle facial skeleton
Lower facial skeleton

Question 3

In which third are most facial bones found

Answer 3

Middle facial skeleton

Question 4

What is the upper facial skeleton made up of

Answer 4

Frontal bone

Question 5

What is the lower facial skeleton made up of

Answer 5

Mandible

Question 6

Name the unpaired facial bones

Answer 6

1. Frontal
2. Mandible
3. Ethmoid
4. Vomer

Question 7

Name the paired bones of the facial skeleton

Answer 7

1. Zygomatic
2. Lacrimal
3. Nasal
4. Maxilla
5. Inferior nasal conchae
6. Palatine

Question 8

How do we classify facial fractures

Answer 8

Using le Fort fracture patterns

Question 9

What is Le fort fracture patterns split into

Answer 9

3 categories:

I, II, III

Question 10

What is a level I Le Fort fracture pattern

Answer 10

Transmaxillary fracture

Question 11

What is a level II Le Fort fracture

Answer 11

A pyramidal fracture going over the nose

Question 12

What is a level III Le Fort fracture

Answer 12

A craniofacial dissociation

Question 13

Name the most common site where the mandible fractures

Answer 13

Condylar process accounting for 36% of mandible fractures

Question 14

Name the different sites mandibles can fracture from most common to least common

Answer 14

1. Condylar process (36%)
2. Body of mandible (21%)
3. Angle of mandible (20%)
4. Symphysis (14%)
5. Ramus (3%)
6. Alveolar process (3%)
7. Coronoid process (2%)

Question 15

How many regions make up the nasal cavity

Answer 15

3 regions

Question 16

Name the 3 regions that make up the nasal cavity

Answer 16

1. Olfactory region
2. Respiratory region
3. Nasal vestibules

Question 17

Where does the nasal conchae lie

Answer 17

In the lateral walls of the respiratory and olfactory regions

Question 18

What is the nasal conchae made up of

Answer 18

1. Superior
2. Middle
3. Inferior

Question 19

Which bone makes up the superior and middle nasal conchae

Answer 19

Ethmoid bone

Question 20

Name the different paranasal sinuses

Answer 20

1. Frontal
2. Ethmoid
3. Sphenoid
4. Maxillary

Question 21

What happens to the paranasal sinuses with age

Answer 21

They expand as the head gets bigger

Question 22

How many sinuses does a new born baby have

Answer 22

Just 1: the maxillary sinus

Question 23

How are the sinuses drained

Answer 23

Thought meatus

Question 24

Name the different meatuses in the head

Answer 24

1. Superior meatus
2. Middle meatus
3. Inferior meatus

Question 25

What does the superior meatus drain

Answer 25

1. Sphenoid sinus

2. Posterior ethmoidal cells

Question 26

What does the middle meatus drain

Answer 26

1. Anterior and middle ethmoidal cells
2. Frontla sinus
3. Maxillary sinus

Question 27

What does the inferior meatus drain

Answer 27

Nasolacrimal duct

Question 28

What can project into the maxillary sinus

Answer 28

Roots of the maxillary molar teeth

Question 29

What are the roots of the maxillary molars covered in

Answer 29

A thin layer of mucosa

Question 30

What can happen if we extract maxillary molars that are projected into the maxillary sinus

Answer 30

Can lead to development of an ono astral fistula which caries the risk of a sinus infection