Three major digestive juices are secreted within the small intestine, they are bile juice, pancreatic juice and intestinal juice.
Bile juice helps to break down the lipid molecules into di-and monoglycerides by the lipase enzymes and they are secreted by the liver.
The pancreatic juices are secreted by the pancreas. The pancreatic juice contains enzymes that complete the pancreatic amylase starch digestion. It also includes pancreatic enzymes that complete the digestion of trypsin, chymotrypsin and carboxypeptidase named protein.
The secretions of brush border cells and goblet cells from the intestinal juice in the small intestine.