Anatomy of the skull

Question 1

Cranium

Answer 1

the hollow cavity which surrounds the brain

Question 2

Face

Answer 2

the front vertical part of the skull, containing the orbital cavities of the eyes and the nasal cavity of the nose

Question 3

Jaws

Answer 3

the upper + lower jaws of oral cavity, supporting the teeth + tongue + providing the openings for the respiratory tract + digestive tract

Question 4

1.

Answer 4

All the bones of skull except lower jaw (mandible) are fixed to each other by immovable joints called sutures

Question 5

2.

Answer 5

the base (underside) of cranium articulates with topmost bone of the vertebral column, (the atlas) + allows nodding movements of the head

Question 6

3.

Answer 6

the skull develops in foetus as cartilage, which is gradually converted to bone during growth of body Into adulthood

Question 7

4.

Answer 7

the outer layer of bone is called compact bone + perforated by many natural bony openings (foramina) to allow the passage of nerve + blood vessels.

Question 8

5.

Answer 8

the inner layer is called cancellous bone + is sponge like in appearance, because if it was solid it would make bone too heavy for muscles to be able to lift

Question 9

6.

Answer 9

nerves + blood vessels run freely within the spongy structure of cancellous layer + pass into + out of it through the foramina