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Exploration of the brain from its superior aspect

Posterior limb of anterior commissure, optic tract and cerebral peduncle

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Image #12-6
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Exploration of the brain from its superior aspect
Posterior limb of anterior commissure, optic tract and cerebral peduncle
The lentiform nucleus and paraterminal area have been dissected so that the posterior limb of the anterior commissure can be traced to the midline. The left column of the fornix has been cut across as it enters the hypothalamus. The optic tract can be seen through most of its course toward the lateral geniculate body since the lowest part of the internal capsule has been removed. Note
1 . Frontal part corona radiata
2 . Anterior horn lateral ventricle
3 . Site of head of caudate nucleus
4 . Frontal part internal capsule
5 . Lentiform nucleus
6 . Lateral striate arteries
7 . Posterior part of anterior commissure
8 . Optic tract
9 . Hippocampal digitations
10 . Lateral geniculate body (cut across)
11 . Hippocampal fimbria
12 . Collateral eminence
13 . Longitudinal fissure (cerebral)
14 . Genu corpus callosum
15 . Septum pellucidum
16 . Right column of fornix (cut across)
17 . Left column of fornix (cut across)
18 . Stria medullaris thalami
19 . Cerebral peduncle (cut across)
20 . Hypothalamic nucleus
21 . Subthalamus (region of H fields)
22 . Third ventricle
23 . Medial geniculate body (cut across)