. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. PITHECUS RHESUS, MACACUS RHESUS 361 the tail and leg, require more extensive relay stations for the eonduction of sensory impulses to the brain. The ventricular portion of the oblongata presents a characteristic. FIG. 168. RIGHT LATERAL SURFACE OF BRAIN, MACACUS RHESUS. [Actual Length 62 mm.] Key to Diagram, obl., Oblongata; sulcus Sulcus Centralis; sulc. occip. lat., Sulcus Occipi- talis Lateralis; sulc. precnt. inf., Sulcus Precentralis Inferior; su
. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. PITHECUS RHESUS, MACACUS RHESUS 361 the tail and leg, require more extensive relay stations for the eonduction of sensory impulses to the brain. The ventricular portion of the oblongata presents a characteristic. FIG. 168. RIGHT LATERAL SURFACE OF BRAIN, MACACUS RHESUS. [Actual Length 62 mm.] Key to Diagram, obl., Oblongata; sulcus Sulcus Centralis; sulc. occip. lat., Sulcus Occipi- talis Lateralis; sulc. precnt. inf., Sulcus Precentralis Inferior; sulc. retrocent. inf., Sulcus Retro- centralis Inferior; sulcus sim., Sulcus Simiarum. arrangement, in the divarication of the alar plates and the opening oi the ventricular space. The caudal angle is directed downward and covered for a short distance by a remnant of the central gray matter, the obex. The iloor of the ventricle is bounded caudally by two high walls produced by the ele- vations of the cuneus and clava. These, however, gradually become reduced in height until they reach the level of the lateral recess, where they are on the same plane as the ventricular Iloor. This Iloor is divided longitudinally by a deep median sulcus. Upon either side of this sulcus, in the lower angle oi the ventricle, is the trigonum hypoglossi in the position of the hypoglossal nucleus, and lateral to it, the sulcus limitans separating the trigonum hypo- glossi from the fovea vagi, the latter marking the position of the dorsal vagal nucleus. No area postrema or area plumiformis could be discerned in the specimens 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
