. The elements of Embryology. Embryology. XII.] THE CEREBRAL COMMISSURES. 381 hemispheres. These commissures are (1) the anteiior commissure, (2) the fornix, and (3) the corpus callosum, the two latter being peculiar to Mammalia. Fig. 124:. â Ih-. Transverse Section through the Brain of a Sheep's Embryo of 27 cm. in length. (From Kolliker.) The section passes through the level of the foramen of Monro. St. corpus striatum ; m. foramen of Monro ; t. third ventricle ; pi. choroid plexus of lateral ventricle ; /. falx cerebri; th. anterior part of optic thalamus ; ch. optic chiasma ; o. optic nerv
. The elements of Embryology. Embryology. XII.] THE CEREBRAL COMMISSURES. 381 hemispheres. These commissures are (1) the anteiior commissure, (2) the fornix, and (3) the corpus callosum, the two latter being peculiar to Mammalia. Fig. 124:. â Ih-. Transverse Section through the Brain of a Sheep's Embryo of 27 cm. in length. (From Kolliker.) The section passes through the level of the foramen of Monro. St. corpus striatum ; m. foramen of Monro ; t. third ventricle ; pi. choroid plexus of lateral ventricle ; /. falx cerebri; th. anterior part of optic thalamus ; ch. optic chiasma ; o. optic nerve ; c. fibres of the cerebral peduncles ; h. cornu am- monis; p. pharynx; sa. pre-sphenoid bone ; a. orbito- sphenoid bone ; s. points to part of the roof of the brain at the junction between the roof of the third ventricle and the lamina terminalis ; I. lateral 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 Foster, M. (Michael), Sir, 1836-1907. London, MacMillan
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