. The anatomy of the central nervous system of man and of vertebrates in general. Neuroanatomy; Central Nervous System. 298 ANATOMY OF THE CENTEAL NERVOUS SYSTEM. nerve (see especially Fig. 195). It receives a bundle from the arm of the corpus quadrigeminum anterius, well shown on the left side of the figure, above which one will recognize the corpus geniculatum mediale. Beneath the pulvinar the pes pedunculi emerges. In the pes are contained fibers of very varied origin. Embryological studies and especially the exact tracing of secondary degenerations, which result from cerebral lesions, alon
. The anatomy of the central nervous system of man and of vertebrates in general. Neuroanatomy; Central Nervous System. 298 ANATOMY OF THE CENTEAL NERVOUS SYSTEM. nerve (see especially Fig. 195). It receives a bundle from the arm of the corpus quadrigeminum anterius, well shown on the left side of the figure, above which one will recognize the corpus geniculatum mediale. Beneath the pulvinar the pes pedunculi emerges. In the pes are contained fibers of very varied origin. Embryological studies and especially the exact tracing of secondary degenerations, which result from cerebral lesions, alone make it possible to determine where the different tracts lie. There is already a considerable number of well observed cases of partial degeneration of the pes, so that an enumeration of the parts of the pes may with due certainty be given. According to Dejerine^s in- Vorderc. Xie^-hiicfel. Arm <^es Vierhuqclsi '; "^ckV. Haube. Jy^ oeiilomot Corpus ^enic. lai Subsianiia nigra, flintcres hangsbiJndel. Fig. 192.—Cross-section through the corpora quadrigemina anteriora (some- what diagrammatic). TorderG Tierhiigel, Corp. quad. ant. Arm des Yierh., Arm of the Corp. quad. Hatihe, Tegmentum. .Fuss, Crusta, or pes pedunculi cerebri. Schleife, Lemniscus, or fillet. Hinteres Langshiindel, Fasciculus longitudinalis post. Rather Kern, Nucleus ruber. vestigations, which -cover the largest amount of material yet studied, there lie in the outer fifth of the pes fibers which arise from the middle part of the temporal lobe. In its median fifth are fibers which pass down from the region of the operculum. In the middle three-fifths of the pes are found the fibers from the posterior portion of the frontal lobe and from the true motor region. All of these bundles arise direct from the cortical cells and degenerate when they are interrupted anywhere between the cortex and. Please note that these images are extracted from scanned page images that may have been digitall
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Keywords: ., bookcentury1800, bookdecade1890, booksub, booksubjectneuroanatomy
