. Diseases of the nervous system . Cornu infe-rius ventriculi^lateralis Pedunculuscerebri Brachiumpontis Fasciculi longi-tudinalis (pyra-midales) pontis Facies inferior cerebelli Fibra? pontis superficialis Pyramis medullas oblongata? Fig. 61.—The Pyramidal Tract. N. glosso-pharyngeus N. vagusNucleus olivaris inferior Decussatio pyramidum(After Toldt.) 66 HISTOLOGY OF THE CENTRAL NERVOUS SYSTEM The tracts of the second motor neuron are in the foot; these run sideby side for a short distance (Figs. 42, 43, 46) but soon diverge, and only acomparatively small number of them continue caudahvard. T
. Diseases of the nervous system . Cornu infe-rius ventriculi^lateralis Pedunculuscerebri Brachiumpontis Fasciculi longi-tudinalis (pyra-midales) pontis Facies inferior cerebelli Fibra? pontis superficialis Pyramis medullas oblongata? Fig. 61.—The Pyramidal Tract. N. glosso-pharyngeus N. vagusNucleus olivaris inferior Decussatio pyramidum(After Toldt.) 66 HISTOLOGY OF THE CENTRAL NERVOUS SYSTEM The tracts of the second motor neuron are in the foot; these run sideby side for a short distance (Figs. 42, 43, 46) but soon diverge, and only acomparatively small number of them continue caudahvard. The others ex- Lobulusparacentral^ Corona radiata ^ -?- Gyri centrales anterior et posterior(upper portion) Radix anterior n. spinalis. Central fibers of thepyramidal tract Crossed central tract of the N. ^J Crossed central tract of the N. facialis Basispeduncuii Pons (Varoli) —^— Nucleusn. faeialis Radixn. facialis Radix -- \^f\A n. hypoglossi J^\^J \ Nucleus n. hypoglossi \ \\ Pecussatio pyramidum ** - Gyri centrales/ (lower portion) : Pars opercu-lars of the Gyrusfrontalis .inferior \ Capsul a. interna Pyramis (medulla? oblongata?) Fasciculus cerebrospinalis (pyramidalis) lateralis(pyramidal lateral column) •Fasciculus cerebrospinalis (pyramidalis) anterior(pyramidal anterior column) Motor ganglion cells of the anterior column Fig. 62.—The Pyramidal Tract (Red) Beside the Tract of the Hypoglossal and Facial Nerves (Black). (After Toldt.) NEURON SYSTEMS AND NEURON DISEASES 67 tend no deeper than the area of the pons (Figs. 42, -13, 51. Gl) and theseare mostly transverse fibers which pass from one hemisphere of the cere-bellum to the other and also cover from below those fibers which had prev
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervoussystem, bookye
