vil DIGESTION 95 



14. The intestinal juice is secreted in very small quantities. 

 It aids the pancreatic juice in acting upon starches and sugars. 



15. The bile aids the pancreatic juice in changing the fats. 

 It stimulates the walls of the intestines to greater muscular 

 action and to secretion. 



1 6. In the mouth starches are changed into sugars; in the 

 stomach proteids are dissolved ; and in the small intestine 

 starches are changed into sugars, proteids are dissolved, and 

 fats and oils are changed into tiny particles so that they can 

 enter the blood. 



17. The bulk of the contents of the alimentary canal is 

 greatest in the small intestine, where it is a milklike substance 

 with some indigestible solids floating in it. 



1 8. The liquid material can enter the blood, but the solid 

 is a waste that must be ejected from the large intestine at 

 regular intervals. 



