In addition to the digestive juices that are poured into the small intestines from the pancreas and the liver, there is a juice which is secreted from the walls of the intestinal cells. This is called intestinal juice or succus entericus. It is a light yellow fluid with a strong alkaline reaction, due to the presence of sodium carbonate.

Frying fat unwholesome.

One action of the intestinal juice is to change sugar and maltose into glucose, which is then absorbed directly into the blood.