. The anatomy of the domestic animals . Veterinary anatomy. DIGESTIVE SYSTEM OF THE DOG THE MOUTH 491 ^m/ THE PANCREAS The pancreas extends across the dorsal wall of the abdominal cavity behind the stomach. It is triradiate or triangular. The right extremity is attached to the first curve (Flexura portalis) of the duodenum, and here the duct passes to the bowel. The left extremity is related to the left extremity of the stomach, the dorsal end of the spleen, and the anterior pole of the left kidney. The middle or posterior extremity or i lobe is practically median and is related to the portal
. The anatomy of the domestic animals . Veterinary anatomy. DIGESTIVE SYSTEM OF THE DOG THE MOUTH 491 ^m/ THE PANCREAS The pancreas extends across the dorsal wall of the abdominal cavity behind the stomach. It is triradiate or triangular. The right extremity is attached to the first curve (Flexura portalis) of the duodenum, and here the duct passes to the bowel. The left extremity is related to the left extremity of the stomach, the dorsal end of the spleen, and the anterior pole of the left kidney. The middle or posterior extremity or i lobe is practically median and is related to the portal vein and the root of the mesentery. The pancreatic duct passes from the right extremity directly through the duodenal wall, opening about four or five inches (ca. 10-12 cm.) from the pylorus. The interlobular tissue usually contains a good deal of fat. THE SPLEEN The spleen is long and narrow. Its long axis is nearly dorso-ventral in direction, and is curved to con- form to the left part of the greater curvature of the stomach. The dorsal end lies under the vertebral ends of the last three ribs; it is related to the stomach in front, the left kidney behind, and the left extremity of the pancreas medially. The visceral surface has a longitudinal ridge on which the hilus is situated; this divides the surface into nearly equal gastric and intestinal areas, which are in contact with the stomach and colon respectively. The parietal surface is convex and is related to the left lateral and ventral wall of the abdomen. The ventral end is smaller than the dorsal one; it lies on the abdom- inal floor, usually in the umbilical region. The spleen is attached so loosely to the stomach that it may be regarded as being intercalated in the great omentum. In large subjects it may reach a length of about 25 inches (ca. 60 cm.) and a width of 3 to 4 inches (ca. 8 to 10 cm.), and a weight of 10-15 ounces (ca. 350 gm.).. The position of the spleen varies according to the fulness of the stomach and
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphiladelphialondon
