Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . outlined from tlie healthyfibres in ail transverse sections of the nerve-centres, and thus Nature. l^^N. AlEDULLfi KiG. 80.—A Di.\\Tic Repkesentation Designed to Show ihe Course of theMotor Tracts and the Effects of Lesions of the Crus Cerebki, Pons Varolii, andMedulla Oblongata upon Motility. (Modified from Starr by the Author.) Theted fibres represent the motor fibres which govern facial movements These decussate inth
Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . outlined from tlie healthyfibres in ail transverse sections of the nerve-centres, and thus Nature. l^^N. AlEDULLfi KiG. 80.—A Di.\\Tic Repkesentation Designed to Show ihe Course of theMotor Tracts and the Effects of Lesions of the Crus Cerebki, Pons Varolii, andMedulla Oblongata upon Motility. (Modified from Starr by the Author.) Theted fibres represent the motor fibres which govern facial movements These decussate inthe middle of the pons. The blue fibrfs are connected with tongue movements. Thesedecussate at a lower level in the pons. Thepurj>leJibres arethe motor tracts, which presideover voluntary movements of the arms and legs. Some of these decussate at the lower levelof the medulla (the crossed pyramidal tracts), while others do not decussate (the directpyramidal tracts). Each of these three bundles of fibres are associated with a t^roup of motor cells afterleaving the crus. The facial fibres terminate in the facial nuclei (f. «.); the tongue fibresin the hypoglossal nuclei (/;;. «.); the pyramidal tracts in the cells of the anterior horns ofthe spinal gray mat
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Keywords: ., bookcentury1800, bookdecade1880, bookidlecturesonne, bookyear1888
