IN THE PERITONEUM OF A RACCOON. 



171 



The gastric attachments of the lesser omentum and the gastro- 

 pancreatic band (text-fig. 18, no. 6, and text-fig. 9, G.P.B.) fuse 

 on the lesser curvature and fii-st part of the duodenum. The 

 latter band draws down the lesser curve of the stomach, so the 

 plane passing through the two curves meets the vertical at an 

 angle of 45° (text-fig. 19). 



The Great Omentum. 



The posterior layers of the great omentum (text-fig. 18, no. 10),, 

 in passing to the transverse colon, cover the pancreas, and have 

 a sharp free left border, which runs with a concavity to the left, 

 from the hilum of the spleen (text-fig. 18, no. 11) to the transverse 

 colon. It overlaps the upper pole of the left kidney, but is '7 cm. 

 from the hilum of the latter. It is met by a triangular sheet of 

 peritoneum (text-fig. 18, no. 13), the apex of which is attached 

 to the anterior surface of the lower half of the left kidney. 

 There are two pockets between the triangular sheet and the 

 great omentum, and the arrows 0 and D in text-fig. 18 point into 

 them. Another sheet of peritoneum (text-fig. 18, no. 12) passes 

 from the inner border of the left kidney to the posterior parietal 

 peritoneum. 



Between the free edge of the great omentum and the last- 

 named peritoneal sheet there is an opening through which the 

 index-finger can easily be passed into the lesser sac, and the arrow 

 B in text-fig. 18 points into ih. It is bounded in front by the 

 great omentum, to the outer side by the left kidney, and behind 

 by the peritoneum of the posterior abdominal wall. It is 

 bounded above by a. mass of tissue formed by the great omentum, 

 the gastro-splenic ligament, and the pancreatico-splenic band 

 (text-fig. 18, no. 8). 



The triangular sheet of peritoneum (text-fig. 18, no. 13) also 

 meets the part of the great omentum forming the transverse 

 meso-colon on the left side of the latter, and the ileal mesentery 

 (text-fig. 18, no. 28) meets it on the right at the same level, so a 

 peritoneal cross is formed. There are two pockets between the 

 mesentery and the meso-colon, and the arrows E and F in text- 

 fig. 18 point into them'. 



The Peritoneal Connections of the Pancreas. 



The right limb of the pancreas lies within the duodenal loop^ 

 and contained between the two layers of its mesentery. The 

 upper border of the body of the pancreas is connected to the 

 lesser curvature of the stomach by a gastro-pancreatic sheet (text- 

 fig. 18, no. 6, and text-fig. 19, G.P.B. ), which passes behind the 

 posterior surface of the stomach. This sheet is continuous with 

 the duodenal mesentery on the right and the pancreatico-splenic 

 band on the left. It subdivides the lesser sac into two compart- 

 ments, and pulls down the lesser curvature of the stomach. 



The coeliac axis artery (text-fig. 18, no. 9) passes into the 



