. The anatomy of the domestic animals . Veterinary anatomy. THE NERVOUS SYSTEM OF THE PIG 843 related to the anterior mesenteric artery. The two are connected by ganghated cords, and are similarly connected with the ganglia of the opposite side, so that the arrangement is plexiform. The coeliac plexus is more complex than that of the horse m correlation with the compound character of the stomach. The posterior mesenteric gangUon is small and is situated behind the artery of like name It receives fibers from the last three or four lumbar ganglia and two fasciculi from the anterior mesenteric ga
. The anatomy of the domestic animals . Veterinary anatomy. THE NERVOUS SYSTEM OF THE PIG 843 related to the anterior mesenteric artery. The two are connected by ganghated cords, and are similarly connected with the ganglia of the opposite side, so that the arrangement is plexiform. The coeliac plexus is more complex than that of the horse m correlation with the compound character of the stomach. The posterior mesenteric gangUon is small and is situated behind the artery of like name It receives fibers from the last three or four lumbar ganglia and two fasciculi from the anterior mesenteric ganglia. The pelvic viscera receive branches from the posterior mesenteric ganglion and from the sacral ganglia; the latter number five pairs, and the right and left trunJjs are connected here by trans- verse anastomoses. The coccygeal trunks unite at a single fourth coc- cygeal ganglion, then separate, and reunite at the sixth coccygeal gan- glion. Longitudinal fissure Frontal pole THE NERVOUS SYSTEM THE PIG OF. The spinal cord weighs about one and a half ounces _(ca. 42 gm.). It is almost circular in cross-section, except at the enlargements, where it is somewhat flattened dorso-ven- trally. The conus medullaris ex- tends to the anterior part of the third sacral segment. The epidural space is occupied by a large quan- tity of fat. The brain in adults of medium size weighs about four to four and a half ounces (ca. 125 gm.). When viewed from above, the cerebrum has an elongated oval form. The hemispheres are widest at the pos- terior third. The occipital pole is larger than the frontal pole. The medulla oblongata is relatively broad. The cuneate tubercle is very large and is limited laterally by a groove. The corpus trapezoideum is very wide laterally. The pons is less promi- nent than in the ox. The cerebellum is very wide and short. Its anterior face is flattened and presents a depression for the corpora quadrigemina. The vermis is large. The hemispheres consist of a large medi
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