OCCIPITAL BONE:

OCCIPITAL BONE:

Occipital bone forms the back of the head and part of the base of the skull.

It has immovable fibrous joints with the parietal,temporal and sphenoid bones.

Its inner surface is deeply concave and the concavity is occupied by the occipital lobes of the cerebrum and by the cerebellum .

The occiput has two articular condyles that form condyloid joints with the first bone of the vertebral column,the atlas.

This joint permits nodding movements of the head. Between the condyles is the foramen magnum (meaning large hole) through which the spinal cord passes into the cranial cavity .