Internal Anatomy and Fiber Systems of the Cerebrum: Gray Matter, Nuclei, and Connectivity

What are the two main types of matter found in the cerebrum?

Gray matter and white matter.

Where is gray matter located in the cerebrum?

Gray matter is located in the cortical (on the surface) and subcortical (under the surface) areas.

What is the function of the cortex in the cerebrum?

The cortex consists of six layers of cortical neurons.

What forms the Corpus Striatum in the cerebrum?

The internalized nuclei, including the caudate nucleus and lenticular nucleus.

What is the function of the caudate nucleus?

The caudate nucleus has an afferent function, receiving information.

What is the function of the putamen?

The putamen has an afferent function, receiving information.

What is the function of the pallidum?

The pallidum has an efferent function, sending information.

What are the three types of white matter fiber systems in the cerebrum?

Projection fibers, association fibers, and commissural fibers.

What do projection fibers in the cerebrum do?

Projection fibers are responsible for ascending and descending tracts.

What are association fibers and their types?

Association fibers connect adjacent gyri (short fibers) or different lobes (long fibers), such as the cingulum.

What are commissural fibers?

Commissural fibers cross the midline in both directions between hemispheres.

What is the role of the corpus callosum?

The corpus callosum is a major commissural fiber that connects the two hemispheres of the cerebrum.

What is the hippocampus and its functions?

The hippocampus is an internalized gyrus of the temporal lobe that functions in memory processing.

What historic site is associated with the hippocampus?

The hippocampus is a historic site for rabies examination (negri bodies).