THE SECRETING GLANDS 



301 



of the duodenum, and between the pancreas and 

 descending duodenum, then to the right of the pan- 

 creatic duct, with which it communicates by a common 

 orifice, at the summit of a papilla situated just below 

 the middle of the inner wall of the second portion of 

 the duodenum. The cystic artery and veins comprise 

 the blood-supply of the gall-bladder and its duct. 



FIG. 112 



The pancreas and its relations. (Gray.) 



The Pancreas. The pancreas is a compound race- 

 mose gland, of a pinkish-white color. Situated at the 

 back of the epigastrium and left hypochondrium ; 

 connected to the posterior abdominal wall by connected 

 tissue, and lies posterior to the stomach and behind 

 the peritoneum. It is 5 or 6 inches long; its breadth 

 is 1| inches; its thickness J to 1 inch, being greater 

 at its right extremity and upper border. The pancreas 

 is divided into a head, a neck, a body, and a tail. 



The duct of the pancreas is called the pancreatic 

 duct or canal of Wirsung. It extends transversely 



