C The Skull

Question 1

What are the functions of the skull? (6)

Answer 1

1. protects
2. shapes face
3. muscle attachments
4. special senses
5. upper airway
6. mastication

Question 2

What complications can occur with having a skull?

Answer 2

1. finite space - brain swelling

Question 3

What are the subdivisions of the skull? (2)

Answer 3

1. cranium

2. mandible

Question 4

Where are all the foramens?

Answer 4

In the sphenoid bone

Question 5

What plate does the ethmoid bone?

Answer 5

cribiform plate

Question 6

What do the little holes in the tehmoid bone allow?

Answer 6

olfactory nerves to pass

Question 7

What happens to your sutures as you get older?

Answer 7

they start to ossify - after 20 yrs old

Question 8

What problems can you get with sutures?

Answer 8

Craniosynatosis - premature fusion of sutures

Question 9

Why is the Pterion weak and where is it located in the skull?

Answer 9

Where all the sutures are located hence is thin

Laterally

Question 10

What artery runs medially to the pterion and what injury is common here?

Answer 10

middle meningeal artery

extradural haemorhage

Question 11

What are the sinuses and what are they in relation to? (4)

Answer 11

1. frontal sinus
2. ethmoid sinus
3. sphenoid sinus
   4, maxillary sinus

bones

Question 12

What type of skull fractures are there? (4)

Answer 12

1. type 1

• le fort
• maxilla separated

2. type 2
   - whole face is floating
3. type 3
   - visceral cranium is detached
4. Blow out

• orbit of eye
• maxilla or ethmoid bone fracture