. The anatomy of the central nervous system of man and of vertebrates in general. Neuroanatomy; Central Nervous System. CAPSXJLA INTERNA, CORPUS STRIATUM, INTERBRAIN-GANGLIA. 249 in Fig. 124. You must understand that the two hemispheres are in part re- moved, and bear in mind that their coronal fibers passed downward from above into the knee-shaped, white line of the internal capsule. The portions of the capsule formed by fibers coming from the frontal and occipital lobes lie in part in the plane of the section. A few words now in explanation of this section. The frontal, occipital, and tempor
. The anatomy of the central nervous system of man and of vertebrates in general. Neuroanatomy; Central Nervous System. CAPSXJLA INTERNA, CORPUS STRIATUM, INTERBRAIN-GANGLIA. 249 in Fig. 124. You must understand that the two hemispheres are in part re- moved, and bear in mind that their coronal fibers passed downward from above into the knee-shaped, white line of the internal capsule. The portions of the capsule formed by fibers coming from the frontal and occipital lobes lie in part in the plane of the section. A few words now in explanation of this section. The frontal, occipital, and temporal lobes are recognized immediately. The temporal lobe lies over the island of Eeil, and thus partly conceals it. As in Fig. 125, you see the corpus callosum in front cut transversely, and adjoining it the septum pellucidum, at the posterior end of which the pillars of the fornix ascend. Anteriorly, external to the septum, lies the head of the nucleus cau- datus, which is cut into in this section. Its tail, which was seen passing. Fig. 161.—Nucleus caudatus exposed along its entire length (diagram- matic). ArmnonsJiorn, Coi"nu Ammonis. RiecMappen, Olfactory lobe. Yentrikel, Ventricle. along the side of the thalamus in Fig. 125, is not visible. It is contained in the part of the brain removed. Only a small portion of it is still to be seen, posteriorly and externall}'', near to the cornu Ammonis. The above sketch, which represents a nucleus caudatus dissected out, shows how this condition is brought about. The tail of the nucleus caudatus bends around the brain-stem in a gentle curve, and is to be traced almost to the apex of the inferior horn of the lateral ventricle. The entire nucleus must consequently be cut twice in every horizontal section made through the deeper planes of the brain. This is shown by the line a 5 in Fig. 161. Thick tracts of fibers are seen external to the head of the nucleus cau- datus. They come from the cortex of the frontal lobe, and contain the
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