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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the central canal of the spinal cord. Theyare all lined with columnar ciliated epithelium, beneath which isa development of neuroglia. This lining so formed is called theependyma of the ventricles. Where the superior peduncles of thecerebellum are approaching each other at the upper part of thefourth ventricle, the interval between them is bridged over by athin layer of grey matter called the valve of Vieussens. The portions of the central nervous system are thus classi-fied :— (i.) Cerebral hemispheres with the corpora striata, developedfrom the cerebral vesicles—and enclosing the lateral ventricles. CH. XVI.) DIFFEKEN-T PARTS OF THE BRAIN. 603 (ii.) Fore-brain, formed of the parts, including the optic thalami,which enclose the third ventricle. (iii.) Mid-brain, consisting of the parts enclosing the aqueductof Sylvius, viz., the corpora quadrigemina, which form the roof,and the crura cerebri which form the floor. (iv.) Hind-brain, the pons varolii and the cerebellum form respec-
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Fig. 357.—View of the Corpus Callosum from above. \.—The upper surface of the corpuscallosum has been fully exposed by separating the cerebral hemispheres and throwingthem to the side ; the gyrus fornicatus has been detached, and the transverse fibres ofthe corpus callosum traced for some distance into the cerebral medullary substance.1, the upper surface of the corpus callosum ; 2, median furrow or raphe ; 3, longitudinalstrife bounding the furrow; 4, swelling formed by the transverse bands as they passinto the cerebrum; 5, anterior extremity or knee of the corpus callosum; 6, posteriorextremity ; 7, anterior, and 8, posterior part of the mass of fibres proceeding from thecorpus callosum ; 9, margin of the swelling ; 10, anterior part of the convolution of thecorpus callosum; 11, hem or band of union of this convolution; 12, internal con-volutions of the parietal lobe; 13, upper surface of the cerebellum. (Sappey afterFoville.) tively the floor and roof of the fore-part of the hi

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