Bassett Collection of Stereoscopic Images of Human Anatomy

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Exploration of the brain from its superior aspect

Corpus callosum, medial and lateral longitudinal striae

Image #10-2

KEYWORDS: Brain, Frontal lobe, Parietal lobe, Telencephalon, Temporal lobe.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Exploration of the brain from its superior aspect

Corpus callosum, medial and lateral longitudinal striae

The radiations of the corpus callosum to the right hemisphere have been exposed by the removal of the gyrus cinguli (except its anterior portion seen cut transversely), the cingulum, a portion of the superior frontal gyrus and the precuneus. On the surface of the corpus callosum near the midline are seen delicate longitudinal bands, the medial and lateral longitudinal striae. The line of fusion of the cortex of the gyrus cinguli to the thin gray lamina (induseum griseum) covering the corpus callosum is seen at the medial edge of the lateral longitudinal stria (13). The classic figures of the "forceps major" (paired occipital radiations of the corpus callosum) and the "forceps minor" (paired frontal radiations of the corpus callosum) can be visualized in this specimen.

1 .	Cingulate sulcus
2 .	Corona radiata (dissected approximately parallel to fibers)
3 .	Cingulum (cut across)
4 .	Lateral cerebral fissure
5 .	Branches of middle cerebral artery
6 .	Fornix (crus)
7 .	Lingual gyrus (cut across)
8 .	Calcarine fissure
9 .	Longitudinal fissure (cerebral)
10 .	Superior frontal gyrus
11 .	Cingulum
12 .	Frontal part radiations of corpus callosum
13 .	Lateral longitudinal stria
14 .	Superior longitudinal fasciculus
15 .	Corona radiata
16 .	Lateral cerebral fissure
17 .	Medial longitudinal stria
18 .	Corpus callosum (splenium)
19 .	Surface of lingual gyrus facing parieto-occipital fissure
20 .	Occipital part radiations of corpus callosum (forceps major)
21 .	Calcarine fissure
22 .	Cuneus (cut across)
23 .	Minor sulcus within cuneus