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Exploration of the brain from its lateral aspect

Relation of internal capsule to caudate and lentiform nuclei

Image #13-7

KEYWORDS: Brain, Frontal lobe, Telencephalon, Overview.

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Exploration of the brain from its lateral aspect

Relation of internal capsule to caudate and lentiform nuclei

Most of the left cerebral hemisphere has been removed by cutting through the region of the basal ganglia. The lentiform nucleus appears on the cut surface nearly surrounded by fibers of the internal capsule, which includes its anterior limb (7), posterior limb (6), retrolenticular portion (20) and sublenticular part (21). The more anterior fibers appearing underneath the lentiform nucleus are associated with the inferior occipitofrontal fasciculus (9) and external capsule. Note that the internal capsule lies between the lentiform and caudate nuclei. The latter is seen here through much of its extent. The genu of the internal capsule is not apparent at the level of this section.

1 .	Cingulate sulcus
2 .	Corpus callosum
3 .	Septum pellucidum
4 .	Lateral ventricle
5 .	Head of caudate nucleus
6 .	Internal capsule (posterior limb)
7 .	Internal capsule (anterior limb)
8 .	Lentiform nucleus
9 .	Inferior occipitofrontal fasciculus
10 .	Middle cerebral artery(cut off)
11 .	Parieto-occipital branch of posterior cerebral artery
12 .	Fornix (body)
13 .	Great cerebral vein (of Galen)
14 .	Stria terminalis
15 .	Superior colliculus
16 .	Pulvinar
17 .	Choroid plexus lateral ventricle
18 .	Superior cerebellar artery
19 .	Caudate nucleus (tail)
20 .	Internal capsule (retrolenticular part)
21 .	Internal capsule (sublenticular part)
22 .	Hippocampal gyrus left (cut across)
23 .	Cerebellum