Explanation

Intestinal juices or succus entericus is the combined secretion of goblet cells of mucosa (mucous) along with the secretion of brush border cells of mucosa. It is rich in variety of enzymes like maltase, lipase, dipeptidase and nucleosidases etc. Partially hydrolysed proteins entering in the intestine from the stomach are converted into dipeptides (two amino acid) by pancreatic juices. Proteins and polysaccharides are converted into disaccharides by amylase present in pancreatic juice. Fats are broken down into diglycerides or monoglycerides by the action of lipase and with help of bile juices. The enzyme present in succus entricus acts on these end products and convert them into simple absorbable forms Proteins $\overset{\ Trypsin\ \ }{\rightarrow}$ Dipeptides $\underset{(Intestinal\ juice)}{\overset{\ \ \ \ \ \ \ \ Dipeptiase\ \ \ \ \ \ \ \ }{\rightarrow}}$ Amino acids