Neuroanatomy - Internal Anatomy of the Cerebrum

Functional arrangement of the cerebrum

1. Gray matter

2. White matter

What kind of gray matter is on the surface of the cerebrum?

Cortical gray matter

What kind of gray matter is under the surface of the cerebrum?

Subcortical gray matter

Where is white matter in the cerebrum?

deep to cortical gray matter

How many layers of cortical neurons are there within the gray matter of the cerebrum (cortex)?

6

Subcortical nuclei

internalized nuclei known as basal ganglia

What do subcortical nuclei form when intermixed with white matter fibers?

corpus striatum

Caudate nucleus (a type of subcortical nuclei) function

afferent (receiving)

What are the two types of lenticular nucleus (a type of subcortical nuclei)

1. putamen

2. pallidum

putamen lenticular nucleus function

afferent

Pallidum lenticular nucleus function

efferent

What are the two types of white matter in the subcortical nuclei

• internal capsule

• extreme capsule

White matter fiber systems

1. Projection fibers

2. Asssociation fibers

3. Commissural fibers

What kind of projection fiber tracts are there?

ascending and descending tracts

what two types of association fibers are there?

short or long

Short association fibers location

intralobar between adjacent gyri

Long association fiber location

interlober between lobes

This type of white matter fiber crosses the midline in both directions between demisphere

Commissural fibers

Two types parts of commissural fibers

1. corpus callosum

2. rostral commissure

Hippocampus

internalized gyrus of temporal lobe

Hippocampus function

memory processing

Hippocampus is a historic site for examination of what lethal disease?

rabies