Osteology and Radiographic Appearance of the skull

Question 1

What is the skull made up of

Answer 1

Neurocranium

Viscerocranium

Question 2

How many bones in the skull

Answer 2

22

14 viscerocranium

8 neurocranium

Question 3

What are fontanelles

Answer 3

Large areas of unossified membranous gaps between flat bones of calvaria

Question 4

What is the function of fontanelles

Answer 4

Allow for alteration of the skull size and shape during childbirth

Question 5

When do the fontanelles fuse

Answer 5

Anterior - 18 months - 2 years

Posterior - 1-3 months

Question 6

craniosynostoosis

Answer 6

When there is early fusion of fontanelles and sutures

Question 7

What is the trialaminar arrangement of the calvaria

Answer 7

Compact bone
Dipole - spongy bone
Compact bone -inner

Question 8

What is the thinnest area o skull

Answer 8

Pterion

Question 9

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

Answer 9

Temporomandibular joint

Synovial hinge-type joint

Question 10

What innervated the TMJ

Answer 10

Auriculotemporal nerve

Question 11

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

Answer 11

Massager
Temporalis
Medial pterygoid

Question 12

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

Answer 12

Lateral pterygoid
Gravity
Against resistance- platysma, suprahyoids assist

Question 13

What muscles are involved in protusion of the mandible at TMJ

Answer 13

Lateral pterygoid

Medial pterygoid assists

Question 14

What muscles are involved in retraction Of the mandible at TMJ

Answer 14

Posterior fibres of temporalis