Textbook of normal histology: including an account of the development of the tissues and of the organs . always been among themost striking, it was not until the introduction of Golgis silvermethod that a full appreciation of the remarkable richness of theseramifications became possible. In such preparations the molecularlayer is occupied to its extreme periphery by the intertwining butununited fibrils of the branching processes. The extent andbreadth of these apparent net-works, however, vary with the pointof view, for the cells send out their branches especially in a directionat right angles
Textbook of normal histology: including an account of the development of the tissues and of the organs . always been among themost striking, it was not until the introduction of Golgis silvermethod that a full appreciation of the remarkable richness of theseramifications became possible. In such preparations the molecularlayer is occupied to its extreme periphery by the intertwining butununited fibrils of the branching processes. The extent andbreadth of these apparent net-works, however, vary with the pointof view, for the cells send out their branches especially in a directionat right angles to the long axis of the convolution or the medullarytract, while in a plane parallel to this axis the branches are limitedto a narrow zone, scarcely wider than the body of the cell: it follows THE CENTRAL NERVOUS SYSTEM. ^0Q that in order to display Purkinjes cells to the best advantage thetissue should be sectioned across, and not parallel with, the axisof the convolutions. These cells, further, are not placed at uniformdistances throughout the row which they form, but are more numerous Fig. Section of outer portion of cereb lbr cortex of young dog, stained after Golgis silver method:P, cell of Purkinje, exhibiting profuse arborization of protoplasmic processes; /, its axis cylinderprocess: B, B, cells of outer layer whose axis-cylinder processes form basket-works aroundbodies of Purkinjes cells; C, small ganglion-cells limited to outer layer. (After Retzius.) and more closely arranged at the summit of the convolutions,at the bottom of the fissures being more widely separated; thesevariations correspond with the areas of greatest and least developmentof the nuclear layer. The molecular or outer layer consists of a ground-substanceof finely-reticulated supporting neuroglia, in which extend the elab-orate arborizations of Purkinjes cells, together with certainnervous elements belonging to this zone. These latter are of twokinds : small multipolar cells whose branched prot
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Keywords: ., bookauthorpiersolgeorgeageorgea, bookcentury1800, bookdecade1890
