. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. i6o COMPARATIVE MORPHOLOGY OF VERTEBRATES. cerebrum against which it is folded. In the bottom of the Sylvian fissure is a part of the side wall of the cerebrum which has received the name of insula (island of Riel), while a hippocampal fissure causes the hippocampus to appear as a pro- nounced swelling on the floor of each ventricle. In the lower mammals these are the only fissures present, the rest of the cerebral surface being smooth. In the higher mammals other grooves (sulci) separating convolutions (gyri)
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. i6o COMPARATIVE MORPHOLOGY OF VERTEBRATES. cerebrum against which it is folded. In the bottom of the Sylvian fissure is a part of the side wall of the cerebrum which has received the name of insula (island of Riel), while a hippocampal fissure causes the hippocampus to appear as a pro- nounced swelling on the floor of each ventricle. In the lower mammals these are the only fissures present, the rest of the cerebral surface being smooth. In the higher mammals other grooves (sulci) separating convolutions (gyri) appear. These convolutions increase the extent of cerebral surface and as a consequence they permit of more cortical gray matter upon which mentality depends. The number of gyri increases in the primates and reaches its extreme in man. The folding of the cerebrum also affects the cavities of the cerebrum as well as the course of the fibre tracts, especially of the fornix which becomes greatly bent on itself. In the ventricles distinct regions or 'horns' are recognized, an anterior cornu in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
