THE DIGESTIVE SYSTEM. 



177 



Bile and Pancreatic Juice. Soon after the chyme 

 enters the small intestine it has poured upon it two liquids, 

 which enter the intestine in one common stream ; these 

 are the bile and the pancreatic juice. These juices come 

 from two large compound glands, the liver and pancreas, 



Fig. 63. Diagram of Portal Circulation. 



that lie close to the stomach. Their ducts join before they 

 enter the intestine into which these juices are emptied a 

 few inches beyond the stomach. 



The Portal Circulation. The liver receives blood 

 from two sources, a branch of the aorta and the portal 

 vein. The portal vein is formed by the union of veins 

 from the stomach, intestine, pancreas, and spleen. Unlike 



