3.5 The Growth of the Skull Flashcards

1
Q

Is the Neonatal Skull fully Ossified?

A

No

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2
Q

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

A

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)
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3
Q

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

A

Intramembranous Occification

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4
Q

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

A

Endochondrial Occification

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5
Q

What are the Fontanelles?

A

Soft Membranous Gaps between the Cranial Bones

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6
Q

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

A

They Decrease in size until they fuse

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7
Q

What are the Dentition?

A

The Teeth

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8
Q

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

A

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)

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9
Q

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

A

Decreases in thickness

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10
Q

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

A

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

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11
Q

At what age does the Anterior Fontanelle fuse?

A

18 months

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12
Q

At what age does the Posterior Fontanelle fuse?

A

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

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