3.5 The Growth of the Skull Flashcards Preview

2nd Year - Head and Neck Anatomy > 3.5 The Growth of the Skull > Flashcards

Flashcards in 3.5 The Growth of the Skull Deck (12):
1

Is the Neonatal Skull fully Ossified?

No

2

What are the benefits of the Neonatal Skull not being fully Ossified?

It means that it is less Rigid (more Flexible) which allows for:
1. Compression so easier passage during Childbirth
2. Rapid Growth of the Brain during
3. Less likely to Fracture the Skull in accidents (e.g. falls)

3

What type of Occification occurs in the Flat bones, of the Vault of the Skull?

Intramembranous Occification

4

What type of Occification occurs in the Irregular Bones, of the Base of the Skull?

Endochondrial Occification

5

What are the Fontanelles?

Soft Membranous Gaps between the Cranial Bones

6

What happens to the Fontanelles from the development from Foetal, to child, to Adult?

They Decrease in size until they fuse

7

What are the Dentition?

The Teeth

8

What happens to the Dentition from the development from Foetal, to child, to Adult?

Foetal - No Teeth, start to grow the Deciduous Teeth
Child - Lose Deciduous Teeth, start to grow the Permanent Teeth
Adult - Permanent Teeth (greater in number than the Deciduous Teeth)

9

What happens to the Tympanic Membrane from the development from Foetal, to child, to Adult?

Decreases in thickness

10

What happens to the Styloid / Mastoid Process from the development from Foetal, to child, to Adult?

These are not present in Neonates and so develop properly after Birth

11

At what age does the Anterior Fontanelle fuse?

18 months

12

At what age does the Posterior Fontanelle fuse?

12 months but is less predictable as it varies from child to child