. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. FIG. 76. RIGHT LATERALSURFACE OF BRAIN, CALLITHRIX JACCHUS (mARMOSET). [Actual Length, 31 mm.] Key to Diagram, ob., Oblongata. The superior vermal portion of the cerebellum is more conspicuous than the lateral lobes which show but slight expansion. On the occipital surface the vermis is also the outstanding feature. It represents scarcely less than a third of this surface and stands out conspicuously against the poorly devel- oped lateral expansions of the c
. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. FIG. 76. RIGHT LATERALSURFACE OF BRAIN, CALLITHRIX JACCHUS (mARMOSET). [Actual Length, 31 mm.] Key to Diagram, ob., Oblongata. The superior vermal portion of the cerebellum is more conspicuous than the lateral lobes which show but slight expansion. On the occipital surface the vermis is also the outstanding feature. It represents scarcely less than a third of this surface and stands out conspicuously against the poorly devel- oped lateral expansions of the cerebellum. The two paramedian sulci interrupt the passage of the interfolial fissures from the inferior vermis to the lateral lobe. No such sulcus, however, exists on the tentorial surface. While the cerebral hemispheres of marmoset assign the animal to a definite place among the primates, the simplicity of the brain indicates the relatively low position of the Hapalidae (Fig. 76). THE SURFACE MARKINGS OF THE BRAIN STEM The surface markings of the brain stem are in general much less dis- tinct than m the higher primates. In many respects, they are less impressive than in Lemur mongoz. The oblongata on its ventral surface presents a ventromesial sulcus and two faintiv marked ventrolateral sulci. Neither the. 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 Tilney, Frederick, 1875-1938; Riley, Henry Alsop, 1887-. New York, P. B. Hoeber, inc.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbrain, booksubjectevo
