Ressource pédagogique sur la zoologie économique, axée sur l'anatomie, la physiologie et la gestion du bétail et des animaux économiquement importants.
1478 x 1691 px | 25 x 28,6 cm | 9,9 x 11,3 inches | 150dpi
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. A text-book of agricultural zoology. Zoology, Economic. NEEVOUS SYSTEM. 317 weight is about twenty-two ounces, in the sheep about five ounces. It is ovoid in shape. Viewed on its superior surface (fig. 163), we shall see the following areas, starting from behind, where it joins the spinal cord: The medidla or isthmus (B), a kind of white peduncle running into the brain, the prolongation as it were of the spinal cord: following this is a grey trilobed. Pig. 164.—Bbain of Hobse (ventral view). 01, Olfactory lobes; CI and C2, cerebmm; Cb, cereliellum; M, medulla; Op.C, optic chiasma; Pt, pituitary gland; Cc, crura cerebri; P, pons Varolii; 1-10, roots of cranial nerves. mass, the cerebellum (C), and in front of the cerebellum are seen two other lobes separated by a deep fissure from the cerebellum and from one another (1) ; these two lobes are the cerebral lobes, the whole forming the cerebrum (2-14). The cerebral hemi- spheres are more or less convoluted. On examining the under- surface of the brain (fig. 164) it wiU be seen that the peduncle. 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 work.. Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
