Bassett Collection of Stereoscopic Images of Human Anatomy

Exploration of the brain from its superior aspect

Superior longitudinal fasciculus

Image #8-7

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

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Exploration of the brain from its superior aspect
Superior longitudinal fasciculus
Parts of the left hemisphere adjacent to the central sulcus are further resected nearly to the lateral fissure. The arched course of the superior longitudinal fasciculus (9) can be seen lateral to the corona radiata (7). Posteriorly, as this fasciculus curves sharply downward into the temporal lobe, another wide band of fibers emerges (11) from under its cover and courses toward the occipital lobe. This latter consists in part of the visual radiation (geniculocalcarine tract) and in part of fibers of the inferior occipitofrontal fasciculus. These systems of fibers join the occipital radiations of the internal capsule and corpus callosum.
1 . Cortical branch of anterior cerebral artery
2 . Medullary substance of superior frontal gyrus
3 . Frontal branch of middle cerebral artery
4 . Cingulate gyrus (cut across)
5 . Cingulum (cut off)
6 . Artery of precentral sulcus within precentral sulcus
7 . Corona radiata (area of junction of radiations of corpus callosum and internal capsule)
8 . Artery of central sulcus in lower part of central sulcus
9 . Superior longitudinal fasciculus
10 . Lateral and medial longitudinal striae
11 . Parts of geniculocalcarine tract (optic radiations), inferior occipitofrontal fasciculus, occipital part internal capsule and occipital part of radiations of corpus callosum
12 . Branch of posterior cerebral artery lying within parieto-occipital fissure
13 . Branch of posterior cerebral artery lying within calcarine fissure
14 . Cortical veins ramifying in transverse occipital sulcus
15 . Frontal pole
16 . Longitudinal fissure (at this point a large cerebral vein is displaced downward in the specimen)
17 . Medial frontal gyrus
18 . Precentral gyrus
19 . Central sulcus (Rolandic)
20 . Corpus callosum (splenium)
21 . Parieto-occipital fissure right