Dorsal striatum

Dorsal striatum
Brain: Dorsal striatum
Gray656.png
Diagrammatic coronal section of brain to show relations of neopallium. Cs. dorsal striatum. Th. Thalamus.
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Two views of a model of the striatum: A, lateral aspect; B, mesal aspect.
Gray's subject #189 833
NeuroNames ancil-255
MeSH Dorsal+Striatum

The dorsal striatum, corpus striatum or striated body is a compound structure consisting of the caudate nucleus, and the lentiform nucleus (which consists of the putamen and the globus pallidus).[1] It is a pair of nuclear masses which form the basal ganglia, along with the subthalamic nucleus and the substantia nigra.

Contents

Definition

The term has been defined in a few different ways:

Anatomy

A part of the dorsal striatum is imbedded in the white substance of the hemisphere, and is therefore external to the ventricle; it is termed the extraventricular portion, or the lentiform nucleus.

The remainder, however, projects into the ventricle, and is named the intraventricular portion, or the caudate nucleus.

The dorsal striatum has received its name from the striped appearance which a section of its anterior part presents, in consequence of diverging white fibers being mixed with the gray substance which forms its chief mass. From lateral to medial, there lies the external capsule (white matter), the lentiform nucleus (gray matter), the internal capsule (white matter), and the caudate nucleus (gray matter).

References

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

See also


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