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Bassett Collection of Stereoscopic Images of Human Anatomy

Exploration of the brain from its superior aspect

Gyrus cinguli; medullary substance of superior frontal gyrus

Image #8-4

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

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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
Gyrus cinguli; medullary substance of superior frontal gyrus
Medial portions of the left hemisphere have been removed to reveal systems of fibers in the medullary substance. In addition to short association fibers (arcuate fibers) the broken ends of longer association fibers and projection fibers are seen extending upward into the field of dissection. The sulcus cinguli (6), which contains a branch of the anterior cerebral artery, has been exposed to its depth by the removal of part of the left superior frontal gyrus, the medial portions of the precentral and postcentral gyri and the paracentral lobule (of the medial aspect of the hemisphere). The upper surface of the gyrus cinguli is thus exposed. Further posteriorly resection of the superior parietal lobule and precuneus has exposed the depths of the left parieto-occipital fissure and its contained branches of the posterior cerebral artery. The dissected area extends laterally to the interparietal sulcus and superior frontal sulcus. Comparison should be made with the intact right hemisphere.
1 . Branch anterior cerebral artery
2 . Branch middle cerebral artery
3 . Projection fibers extending into superior frontal gyrus
4 . Superior frontal sulcus
5 . Upper surface of cingulate gyrus
6 . Deep margin of cingulate sulcus
7 . Great anastomotic vein of Trolard continuing into one of the superior cerebral veins which follows the central sulcus
8 . Postcentral gyrus
9 . Central sulcus (in depths of dissection on left side)
10 . Broken fibers forming part of corona radiata
11 . Interparietal sulcus
12 . Surface of cingulate gyrus in depths of subparietal sulcus
13 . Surface of cuneus in depths of parieto-occipital fissure
14 . Branch posterior cerebral artery (in depths of parieto-occipital fissure)
15 . Branch posterior cerebral artery
16 . Occipital pole
17 . Frontal pole
18 . Superior frontal gyrus
19 . Callosomarginal branch of anterior cerebral artery (in depths of cingulate sulcus)
20 . Marginal part of cingulate sulcus
21 . Superior parietal lobule
22 . Parieto-occipital fissure
23 . Superior occipital gyri
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