. A treatise on nervous and mental diseases, for students and practitioners of medicine. ticular 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. (Duret ) has furthermore demonstrated that the posterior cerebral artery notonly supplies the optic thalamus, but also the corpora quadrigeminaand the tegmental region of the crus. One of these branches to theoptic thalamus, the postero-internal optic artery, supplying the inners
. A treatise on nervous and mental diseases, for students and practitioners of medicine. ticular 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. (Duret ) has furthermore demonstrated that the posterior cerebral artery notonly supplies the optic thalamus, but also the corpora quadrigeminaand the tegmental region of the crus. One of these branches to theoptic thalamus, the postero-internal optic artery, supplying the innersurface, is prone to minute hemorrhages, which are very dangerousbecause of their tendency to break into the ventricle; whilst an-other branch, the posterior external optic artery, passes over the crusl)efore reaching the hinder portion of the optic thalamus, and hemor-rhages of it may therefore involve both the optic thalamus and thecrus. 72 INTRODUCTORY. The arteries of the cortex are subdivided into secondary and ter-tiary branches within the pia, and from the plexus so constructed. Distribution of arteries to gray and white matter. 1, 1. Medullary branches passingdirectly through the gray matter to the white matter, and then terminating in branchesthat do not anastomose with their neighbors (terminal arteries). 1. Medullaryarteries in the sulcus between two convolutions. 2, 2. Cortical arteries. (Duret.) Fig. 54.
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