Anatomy - cranium

How many bones make up the skull?

22

What are the lines called that interlock skull bones?

Sutures

exception-mandible, held to the cranium by ligaments

How many bones are in the cranium?

8

How many bones are considered facial?

14

Cranium function

Protects the brain and the surface of the cranium provides attachments for muscles that allow for movement

Sinuses

air-filled cavities that are lined with mucus membranes and connected by passageways to the nasal cavity

Reduce the weight of the skull and increase the intensity of the voice by serving as a sound chamber

Foramen magnum function

passes nerves fibers from brain to spinal cord

What does FPOT stand for?

frontal, parietal, occipital, temporal

Infantile skull function

holds the baby's head

Fontanels

soft spot on head that allows for movement between the bones so that the developing skull can pass through the birth canal

What heppens to the maxilla if it doesn't develop properly?

Cleft palate

Labelled skull image (look in book for a better picture)

Lateral view