Description:

tough, fibrous, inelastic membrane

Function:

protects brain

Description:

Walls of the dura mater that subdivide the cranial cavity

- separates cerebrum into 2 hemispheres sagittally 

Function:

Prevents excessive movement of brain within cranial cavity

 Dural Septa

*there are three subcategories

Description:

runs from anterior to posterior and in the midline

- separates cerebrum (cerebri) into left and right halves

Function:

prevent excessive movement of the brain within the cranial cavity

- separate cerebrum from cerebellum

Description:

 horizontal; between the cerebrum and cerebellum

- fairly large flap, largest of three dural septa subdivision

Function:

prevent excessive movement of the brain within the cranial cavity

Description:

"below" tentorium cerebelli and in the midline

Function:

prevent excessive movement of the brain within the cranial cavity

Olfactory Nerve

Description:

not visible; olfactory bulbs which receive impulses from these nerves may be visible 

Function:

olfaction (smell)