. A treatise on the nervous diseases of children : for physicians and students. ility ofcollateral blood-supply is practi-cally cut off. Heubner claims thatthere are frequent anastomosesbetween the cortical terminalbranches, but Duret, whose au-thority in this matter stands un-questioned, does not agree withHeubner in this respect. Theareas supplied by the cortical branches of the three great arteries can bestbe studied by an examination of Figures 130 to 132. It will be seen thatthe middle cerebral artery is by far the most important; with its numer-ous ramifications it supplies the greater p
. A treatise on the nervous diseases of children : for physicians and students. ility ofcollateral blood-supply is practi-cally cut off. Heubner claims thatthere are frequent anastomosesbetween the cortical terminalbranches, but Duret, whose au-thority in this matter stands un-questioned, does not agree withHeubner in this respect. Theareas supplied by the cortical branches of the three great arteries can bestbe studied by an examination of Figures 130 to 132. It will be seen thatthe middle cerebral artery is by far the most important; with its numer-ous ramifications it supplies the greater part of the convexity of the hemi-spheres, including within its distribution the third frontal convolution, thepre-central and post-central convolutions, and the angular gyrus as well asthe first and second temporal convolutions. The superior frontal and theanterior two-thirds of the middle frontal, as well as the upper portion ofthe ascending frontal, are supplied by the anterior cerebral. The occipitallobe is supplied entirely by the posterior cerebral. The lower portion of. Fig. 132.—Distribution of Blood Supply atthe Base. (Schafer.) 468 THE NERVOUS DISEASES OF CHILDREN. the temporal lobe which the middle cerebral does not reach is also sup-plied by the posterior cerebral. On the median surface the relative impor-tance of the arteries is reversed. The whole anterior and upper portion overthe frontal end, as far back as the parieto-occipital fissure, is supplied by theanterior cerebral artery. The cuneus and the occipital temporal convolutionsare supplied by the posterior cerebral, leaving but a very small portion at theanterior end for the middle cerebral. Of the parts enveloped by the hemispheres it is well to know that the cor-pus callosum is within the domain of the anterior cerebral, the corpusstuiatum is supplied by the middle cerebral artery, the branches of this ar-tery passing to this region through the foramina in the anterior perforatedspace. Duret divides these
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