. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. MS. ir. Fig. 344.—Diagram of the Cerebral Ves- icles of the Brain* of a Chick at the Second Day of In- cubation, after Ca- mat. (Yeo.) I, 2, 3, cerebral vesicles; 0, optic vesicles. Fig. 345.—Diagram of a Vertical Longitudinal Section of a Develofing Brain of a Vertebrate Animal showing the Relations of the Three Cerebral Vesicles to the Different Parts of the Aditlt Brain, after Huxley. (Yeo.) 01/, olfactory lobes: , the foramen of Monro; corpns striatum; Tli, optic thalamus; Pit, pineal planus; J
. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. MS. ir. Fig. 344.—Diagram of the Cerebral Ves- icles of the Brain* of a Chick at the Second Day of In- cubation, after Ca- mat. (Yeo.) I, 2, 3, cerebral vesicles; 0, optic vesicles. Fig. 345.—Diagram of a Vertical Longitudinal Section of a Develofing Brain of a Vertebrate Animal showing the Relations of the Three Cerebral Vesicles to the Different Parts of the Aditlt Brain, after Huxley. (Yeo.) 01/, olfactory lobes: , the foramen of Monro; corpns striatum; Tli, optic thalamus; Pit, pineal planus; J/o, mid-brain: C'b, cerebellum; , medulla oblongata.; Hmp, cerebral hemispheres; ThE, tbahmieiu-ephalon ; Pi/, pituitary body; , corpora quadrigemina; f'.C, crura cerebri; P. V, pons varolii; I-XIf, regions from which spring the cranial nerves; 1, olfactory ventricle; 2, lateral ven- tricle ; 3, third ventricle; &, fourth ventricle. develop as two hemispherical vesicles (prosencephalon), which, in the brain of the highest mammals, so increase in size upward and backward as to cover more or less completely the remainder of the primary cere- bral vesicle, the mid-, and hind- brain, so that the mid-brain, composed of the optic thalamus, corpora quadrigemina, and corpora striata {mesencephalon), lies beneath the hemispheres. From the hind-brain originate the cerebellum, pons varolii, and the medulla oblongata (myelencephalon). At first all these parts consist of thin-walled vesicles communicating with each other and with the interior of the central canal of the spinal cord (Figs. 344, 345 and 346). In higher stages of development the walls of these cerebral vesicles become uot only thicker and their cavities smaller and smaller, but. 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 Smith, Robert Mea
Size: 2498px × 1000px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiologycomparativ
