THE PANCREAS 



359 



stores the bile when it is not needed. When the pylorus allows food to 

 pass from the stomach into the small intestine, the bile is poured out 

 for the food's digestion. 



The bile lubricates the intestine, and helps all the operations of 

 digestion and absorption in the intestine. When bile is not secreted 



Fig. 282. 

 Diagram Showing the Structure of the Liver. 



properly, biliousness, accompanied by headache and indigestion, is 

 the result. 



367. The Pancreas. We have already learned about 

 some of the ferments of the digestive tract: the ptyalin 

 of the saliva (cf. 359) and the rennin and pepsin of the 

 gastric juice (cf. 364). Important as these ferments are, 

 they are not so important as the ferments that are poured 

 into the small intestine in the secretion known as the 



