Pancreas is a composite gland. It has exocrine and endocrine parts. The exocrine part secrete pancreatic juice. It contains trypsin, amylopsin and steapsin.
(i) Trypsin: It converts proteins, peptones and proteoses into amino acids.
(ii) Amytases: It acts upon starch and converts them into soluble sugars.
(iii) Steapsin or lipase: It catalyzes the hydrolysis of fats to fatty acids and glycerol.