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Board Review Series - Fix J.D.

Fix J.D. Board Review Series - London, 1995. - 430 p.
Download (direct link): boardreviewseries1995.djvu
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Lateral
ventricle
Caudate
nucleus
Putamen
Globus > Lentiform
Thalamus pallidus nucleus
Insula
Internal
capsule
Claustrum
Third Subthalamic
nucleus
ventricle
Lateral ventricle
Optic tract
Substantia nigra
Amygdala ippocamp
us
Fornix
Figure 21-1. A coronal section through the midthalamus at the level of the mamillary bodies. The basal ganglia
are all prominent at this level and include the striatum and the lentiform nucleus. The subthalamic nucleus and
substantia nigra are important components of the striatal motor system. (Reprinted with permission from Fix JD:
High-Yield Neuroanatomy. Baltimore, Williams & Wilkins, 1995, p 91.)
-exerts its influences on motor activities via the thalamus, motor cortex, and
corticobulbar and corticospinal system s.
A. Components of the striatal system -
consist of the following nucle i:
1. Striatum (caudatoputamen or neostriatum)
a. Caudate nucleus (caudatum)
b. Putamen
2. Globus pallidus (pallidum or paleostriatum)
a. Medial (internal) segment
-is adjacent to the internal capsule.
b. Lateral (external) segment
-is adjacent to the putamen.
3. Subthalamic nucleus
-lies between the internal capsule and the thalamus and between the
internal capsule and the lenticular fasciculus.



--------------------------------------- 244

Chapter 21 Basal Ganglia and the Striatal Motor System I 31 9

4. Thalamus
a. Ventral anterior nucleus
b. Ventral lateral nucleus
c. Centromedian nucleus
5. Substantia nigra
a. Pars compacta
-contains dopaminergic neurons, which contain the pigment
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