Skull: protection and fixation

What is the skull

Term used to define the rigid (hard), cartilaginous or bony structure located anterior to the spine in all vertebrate animals.

Skull function

The skull has the function of storing and protecting the brain, as well as providing fixation to the muscles of the face and mouth.


In some lower vertebrates, the skull is formed by cartilage throughout the life of the organism. In more evolved vertebrates, such as humans, the skull is cartilaginous during the embryo phase and calcifies early in life after birth. until it is rigid.

Skull bones

The human skull is made up of eight bones:

- Parietal (two)

- Temporal (two)

- Front

- Occipital

- sphenoid

- Ethmoid