THE CYTOARCHITECTURE AND THE CELLULAR MORPHOLOGY OF ΤΗΕ HUMAN CORPUS CALLOSUM
Abstract
The cytoarchitecture and the cellular morphology of the corpus callosum from 20 human brains were studied in serial frontal sections using the rapid Golgi 's silver impregnation technique. The morphological analysis revealed that the human corpus callosum is composed of neurons round, pearform, triangular, pyramoid, tetrahedral, fusiform, elongated rodlike and polyhededral with the largest diameter οf cell's body, 8 to 22 m. They have a limited dendritic arborization in the neuropial space with rare or abundant spines. Dendrites are spung up radially, side by side, obliquely or perpendicular to the going through transcallosal fibers, but often the distal parts of all the dendrites bend and run paralled to the going though fibers, so that a bipolar dendritic field is formed whose radius reaches the 230 m. The largest cellular polymorphy has been noticed to the central and dorsal part οf the corpus callosum. The neurons are desposed isolated in longitudinal neuronal chains, extendantly the whole corpus callosum but frequently they develop locally groups frοm 3-7 cells. Our results suggest that in the corpus allosum are developed local neuronal circuits that are intersposed to the systems οf the myelinated fibers and influence probably the character οf the coming impulses.References
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