Osteology and Radiographic Appearance of the skull Flashcards Preview

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Flashcards in Osteology and Radiographic Appearance of the skull Deck (14)
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1
Q

What is the skull made up of

A

Neurocranium

Viscerocranium

2
Q

How many bones in the skull

A

22

14 viscerocranium

8 neurocranium

3
Q

What are fontanelles

A

Large areas of unossified membranous gaps between flat bones of calvaria

4
Q

What is the function of fontanelles

A

Allow for alteration of the skull size and shape during childbirth

5
Q

When do the fontanelles fuse

A

Anterior - 18 months - 2 years

Posterior - 1-3 months

6
Q

craniosynostoosis

A

When there is early fusion of fontanelles and sutures

7
Q

What is the trialaminar arrangement of the calvaria

A

Compact bone
Dipole - spongy bone
Compact bone -inner

8
Q

What is the thinnest area o skull

A

Pterion

9
Q

What type of joint is the articulation between temporal bone and mandible

A

Temporomandibular joint

Synovial hinge-type joint

10
Q

What innervated the TMJ

A

Auriculotemporal nerve

11
Q

What muscles are involved in elevation. Of the mandible at TMJ

A

Massager
Temporalis
Medial pterygoid

12
Q

What muscles are involved in depression. Of the mandible at TMJ

A

Lateral pterygoid
Gravity
Against resistance- platysma, suprahyoids assist

13
Q

What muscles are involved in protusion of the mandible at TMJ

A

Lateral pterygoid

Medial pterygoid assists

14
Q

What muscles are involved in retraction Of the mandible at TMJ

A

Posterior fibres of temporalis