. Diseases of the nervous system . cording to His, neuroblastsand spongioblasts), the neuroglia presents embryologicallj a compact net oftrabecular which vary greatly in their caliber as well as in their density andarrangement. A thickly woven network of trabecular surrounds the brainand spinal cord, another covers the walls of the ventricles and the central canal of the spinal forms a network () in the gray substancethat surrounds the nerve-cells and their glia of the white sub-stance is less dense; itpasses between the nervetubules in a loose fold, en-closes isola
. Diseases of the nervous system . cording to His, neuroblastsand spongioblasts), the neuroglia presents embryologicallj a compact net oftrabecular which vary greatly in their caliber as well as in their density andarrangement. A thickly woven network of trabecular surrounds the brainand spinal cord, another covers the walls of the ventricles and the central canal of the spinal forms a network () in the gray substancethat surrounds the nerve-cells and their glia of the white sub-stance is less dense; itpasses between the nervetubules in a loose fold, en-closes isolated bundles(Fig. 34) of these, and tosome extent penetrates intothe anterior and posteriornerve roots. Many of the nucleiwhich are sometimes sur-rounded by a layer of pro-toplasm are deposited inthe midst of the glia net, preferably in the white substance, where several gliatrabecular cross each other. It is still a mooted question whether these fibersunite with the glia cells (glia nuclei, Deiters cells, spindle cells) (Fig. 36),. Fig. 33. — Transverse Section through the NormalGray Substance of the Anterior Horn op the Spi-nal Cord. 44 HISTOLOGY OF THE CENTRAL NERVOUS SYSTEM or only pass along side them. But the adhesion of glia fihers to connectivetissue septa and vascular sheaths has heen proven.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervoussystem, bookye
