File:Hand-book of physiology (1892) (14578668440).jpg

Identifier: handbookofphysio00bake (find matches)
Title: Hand-book of physiology
Year: 1892 (1890s)
Authors: Baker, W. Morrant, (William Morrant), 1839-1896 Harris, Vincent Dormer Kirkes, William Senhouse, 1823-1864. Hand-book of physiology. 13th ed
Subjects: Physiology Human physiology
Publisher: London : John Murray
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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ss down-wards, and numerous processes upwards into the external layer,some becoming continuous with the scattered corpuscles of thatlayer. (3.) The nuclear or granular layer (g), consisting of immensenumbers of corpuscles closely resembling those of the nuclearlayers of the retina. Some of these corpuscles belong to theneuroglia, but others are small nerve cells which terminate in pro-cesses which end in minute branchings. One of the processessends a branch outwards to the molecular layer. (4.) Nerve-fibrelayer (/.) Bundles of nerve-fibres forming the white matter of thecerebellum, which, from its branched appearance, has been namedthe arbor vitas. Some of these fibres pass out to join with the cellsof Purkinje, and others pass further outward into the molecularlayer, where losing their medullas they divide into fibres which 664 THE NERVOUS SYSTEM. (CH. XVI. form part of the layer. In the molecular layer then, there arefour sets of fibres, those passing off from the cell proper to the
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Fig. 389.—Vertical section of dogs cerebellum ; p m, pia mater; p, corpuscles of Purkinje\which are branched nerve-cells lying in a single layer and sending single processesdownwards and more numerous ones upwards, which branch continuously and extendthrough the deep molecular layer towards the free surface; g, dense layer ofganglionic corpuscles, closely resembling nuclear layers of retina; /, layer of nerve-fibres, with a few scattered ganglionic corpuscles. This last layer (//) constitutespart of the white matter of the cerebellum, while the layers between it and the freesurface are yrey matter. (Klein and Noble Smith.) layer, those from the nuclear layer, those from the cells ofPurkinje, and the fibres from the central grey matter. CH. xvi.) FUNCTIONS OF THE CEREBELLUM. 665 Functions of the Cerebellum. (1.) With the exception of its middle lobe, the cerebellum is itselfinsensible to irritation, and may be all cut away without elicitingsigns of pain (Longet). Its removal or disor

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