passes through the small intestine and the neutralization of the gastric juice which has already performed its work. The pancreatic juice is secreted by the pancreas, an elongated organ situated just behind the stomach, and its purpose is to act upon the fatty portions of the food and to render them possible of absorption from the intestines along with the other parts of the food nourishment. About one and one-half pints is used daily in this work.
The hundreds of thousands of plush-like "hairs" upon the velvety lining of the small intestine (above alluded to), and which are known as "villi," maintain a constant waving motion, passing through and in the soft, semi-liquid food which is passing through the small intestine. They are constantly in motion, licking up and absorbing the nourishment that is contained in the food-mass and transmitting it to the system.
The several steps whereby the food is converted into blood and is carried to all parts of the system are as follows: Mastication, insalivation, deglutition, stomach and intestinal digestion, absorption, circulation and assimilation. Let us run over them again hastily that we may not forget them.
Mastication is performed by the teeth—it is the chewing process—the lips, tongue and cheeks assisting in the work. It breaks up the food into small particles and enables the saliva to reach it more thoroughly.
Insalivation is the process of saturating the masticated food with the saliva which pours into it from the salivary glands. The saliva acts upon the cooked starch in the food, changing it into dextrine
