36 



Pancreas. 



366. Pancreas, with Injected, Bifurcated Excretory 



Duct. View from behind, */ natural size. 



The pancreas lies behind the stomach, upon the lumbar portion 

 of the diaphragm (see Fig. 35 1); the left extremity or tail, Cauda, is 

 in contact with the spleen, while the right larger end, the head, Caput, 

 is embraced by the curvature of the duodenum. Its excretory duct, the 

 Ductus pancreaticus s. Wirsungianus, about the size of a quill, extends trans- 

 versely from left to right through the substance of the pancreas, unites 

 with the Jhictus communis . choledochus, and opens with it in the duo- 

 denum ; rarely each duct has a separate opening. Often the pancreatic 

 duct is bifurcated; then the lower branch unites with the common bile- 

 duct, and the upper (Ductus Santorini) opens separately 1 inch or 

 1 Y 2 inches above the lower. 



The spleen, Lien s. Spkn (see Fig. 351 and 362) is a highly 

 vascular gland, lying in the left hypochondriuin, near the fundus of 

 the stomach. The external and upper surface is in relation with the 

 concave surface of the Pars costalts of the diaphragm, the inner surface, 

 containing the hilus, Ililns Hem's., is in relation in front with the stomach, 

 behind with the left crus of the diaphragm ; the anterior border is often 

 slightly notched, the posterior, rounded. The peritoneal covering is con- 

 nected with that of the stomach by means of the Liy. gastro-lienale, with 

 that of the diaphragm by means of the Liy. phrcnico-lienale ; the spleen 

 is also invested with a Tunica propria, which is reflected into the interior 

 of the spleen in the form of large Trabeculac; in the interstices of the 

 connective tissue frame work is the red pulp, Pulpa lienis. 



