THE PANCREAS. 



329 



The peritoneal relations of the duodenum have been noticed at 

 p. 301. 



PANCREAS (fig. 122 and fig. 123, p. 331). The pancreas is situate Pancreas 

 behind the stomach, extending from the duodenum to the spleen, and 

 and occupying parts of the right umbilical, the epigastric, and the 

 left hypochondriac regions. In form it is elongated, with its right 

 portion much expanded from above down, constituting the head ; 

 this part lies in front of the first and second lumbar vertebrae, the 

 great vessels and muscles intervening. 



The gland has a massive head embraced by the duodenum, a neck or head, 



Anterior border of pancreas. 

 Spleen. 



Ascending colon. Superior mesenteric vessels. 



Descending 

 colon. 



Lower part of the splenic 

 flexure of the colon. 



FIG. 122. DEEP VISCERA OF THE ABDOMEN OF A CHILD. 

 (From a specimen in the Charing Cross Hospital Museum.) 



slight constriction near the middle line, usually above the conver- 

 gence of the mesenteric vessels, and a body extending across to the body 

 left as far as the spleen. The left extremity of the body is commonly 

 spoken of as the tail, but the gland is often not at all tapering in tail, 

 this part. 



The BODY has usually somewhat of a twist upon it as it passes to Surfaces ; 

 the left (fig. 123) ; and it presents an anterior or gastric surface, an 

 inferior or jejunal surface, and a posterior. These surfaces are 

 separated by upper, anterior, and lower borders. 



The transverse meso-colon springs from its anterior border ; the 

 upper layer of the peritoneum passes upwards over the gastric 

 surface, and the lower layer is directed backwards across the inferior 

 surface. 



