. A treatise on nervous and mental diseases, for students and practitioners of medicine. Z:? TEMPORftLP. Convolutions of the vertex, on the right; on the left, the basal ganglia, internalcapsule, centrum ovale, and cuneus. between the parietal and occipital lobes is at the parieto-occipitalfissure, which is a little indentation at the point indicated in Fig. 1, Fig. 3. CALLOSO-MARGINALF, PARIETO-OCCfPITAL CALCArtlNE F. mammilarybody; optic tract, anterior commissure. Vertical section through the centre of the corpus callosum, showing the convolutions oftlie inturned surfaces of the hemisph
. A treatise on nervous and mental diseases, for students and practitioners of medicine. Z:? TEMPORftLP. Convolutions of the vertex, on the right; on the left, the basal ganglia, internalcapsule, centrum ovale, and cuneus. between the parietal and occipital lobes is at the parieto-occipitalfissure, which is a little indentation at the point indicated in Fig. 1, Fig. 3. CALLOSO-MARGINALF, PARIETO-OCCfPITAL CALCArtlNE F. mammilarybody; optic tract, anterior commissure. Vertical section through the centre of the corpus callosum, showing the convolutions oftlie inturned surfaces of the hemispheres. and better seen upon the inturned surface of the hemisphere (as inFig. 3) than upon the outward lateral surface. The convolutions ofthe occipital lobe are illy defined upon the external hemisphere, but 22 INTRODUCTORY, they can usually, with some approach to accuracy, be marked oifinto the first, second, aud third occipital convolutions, as indicatedin Figs. I and 2. Upon the inturued surface of the hemisphere,Fig. 3, however, there is a convolution of the occipital lobe,known as the cuneus, from its wedge shape, and this is the mostimportant portion of the occipital lobe tor us to know. The upperboundary of the cuneus is the parieto-occipital fissure, whilst thelower boundary is the calcarine fissure, the name being derived from theadjacent hippocampus minor, which is also called the calcar avi
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