. A treatise on nervous and mental diseases, for students and practitioners of medicine. ause they may easily break into theventricle. He has also shown that from the Sylvian arterythere pass off the internal striated vessels going to the firstand second segments of the lenticular nucleus and the internal cap-sule, and the external striated arteries, which are so called becausethey first supply the outer portion of the third segment and the ANATOMY. 71 lenticular nucleus, and then pass into the gray matter of the sameand ascend. These latter branches are subdivided into the lenticulo-striated
. A treatise on nervous and mental diseases, for students and practitioners of medicine. ause they may easily break into theventricle. He has also shown that from the Sylvian arterythere pass off the internal striated vessels going to the firstand second segments of the lenticular nucleus and the internal cap-sule, and the external striated arteries, which are so called becausethey first supply the outer portion of the third segment and the ANATOMY. 71 lenticular nucleus, and then pass into the gray matter of the sameand ascend. These latter branches are subdivided into the lenticulo-striated vessels anteriorly, and the lenticulo-optic vessels lenticulo-striated arteries are large, ascend into the third seg-ment of the lenticular nucleus to the upper part of the internal cap-sule, and pass over to the caudate nucleus, terminating far forward inthis. They are the most usual site of hemorrhages. The lenticulo-optic arteries pass through the posterior portion of the internal capsule,and into the anterior and outer portion of the optic thalamus. Duret Fig. Transverse section of the cerebral hemispheres, about 1 cm. behind the optic commissure. Ch. Chiasma. B. Section of the optic tract. L. Lenticular nucleus. I. Internalcapsule. C Caudate nucleus. E. External capsule. T. Claustrum. R. Island ofReil. V, V. Section of the lateral ventricle. P, P. Anterior pillars of the fornix. substance of the third ventricle. Vascular Areas: I. Anterior cerebral artery. II. Middle cerebral artery. III. Pos-terior cerebral artery.—1. Internal carotid artery. 2. Sylvian artery. 3. Anteriorcerebral artery. 4, 4. External arteries of the corpus striatum (lenticulo-striate artery).5, 5. Internal arteries of the corpus striatum (lenticular arteries). 6. Arteries of thechiasma. 7. Arteries of the commissure and anterior pillars of the fornix. 8. Arteriesof the convolutions of the insula and claustrum. The opto-striate artery is not repre-sented in the figure. (Dur
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