The liver secretes a digestive fluid called bile, which is an alkaline substance. Its chief purpose is to emulsify fats and to supply the alimentary tract with the requisite amount of moisture.
Fourth—THE PANCREAS:
The pancreatic juice, secreted by the pancreas, is an alkaline and slightly acidulous substance. It contains three enzyms, the names and action of which are as follows:
Amylopsin completes the digestion of starch.
Trypsin completes the digestion of proteids.
Steapsin converts fats into fatty acids and glycerin.
Fifth—THE SMALL INTESTINES
The intestinal juices secreted by the small intestines are alkaline substances which change sugar and maltose into glucose, and perform the last step in the process of breaking up or subdividing food so fine that it will pass through the intestinal walls into the circulation.
LESSON V
CHEMISTRY OF DIGESTION
Alternation of digestive juices