. The anatomy of the central nervous system of man and of vertebrates in general. Neuroanatomy; Central Nervous System. 334 ANATOMY OF THE CENTEAL NEKVOUS SYSTEM. anterior peduncles enter the cerebellum;, one will find dorsally the cerebel- lum, ventrally the pons and the fibers which pass from it on both sides into the hemispheres. Between the cerebellum and the tegmentum, bounded on either side by the divided peduncles, lies the fourth ventricle, which is the widened continuation of the aqueduct of Sylvius. The medullary substance of the vermis does not lie in the plane of the section. The t
. The anatomy of the central nervous system of man and of vertebrates in general. Neuroanatomy; Central Nervous System. 334 ANATOMY OF THE CENTEAL NEKVOUS SYSTEM. anterior peduncles enter the cerebellum;, one will find dorsally the cerebel- lum, ventrally the pons and the fibers which pass from it on both sides into the hemispheres. Between the cerebellum and the tegmentum, bounded on either side by the divided peduncles, lies the fourth ventricle, which is the widened continuation of the aqueduct of Sylvius. The medullary substance of the vermis does not lie in the plane of the section. The tegmentum and the pes, the latter traversed by the pontal fibers, lie in the same relative posi- tions as when seen in sections through the region of the corpora quadri- gemina. We have found that fibers pass through the three pairs of peduncles into the cerebellum. Their course within the cerebellum is still very imper-. Fig. 210.—Frontal cerebellar section just anterior to the culmen. TJ, Ven- triculus quartus. R, Anterior peduncle. P, Pons. Zon, Decussation-zone. Gr., Fibers from. corp. i-est. passing to Scm, the fibrfe semieirculares. (After B. Stilling.) fectly known, notwithstanding the fact that Benedict Stilling has devoted long years of work to the study. However, the work of the last few years, especially that directed to the tracing of degenerations which follow a total or partial extirpation of the cerebellum, has furnished a large number of important facts regarding the topography. So it is at last possible to elucidate the origin of the separate arms. The diagram given in Fig. 211 shows upon the frontal sections, through those portions of the central nervous system which are in immediate asso- ciation with the cerebellum, the most important facts at present known regarding the connections of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of the
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