So secretin is yet another peptide hormone that is released by our exocring, by our glands found in the small intestine. And what Secretin basically does is it stimulates the pancreas to release the pancreatic juice which consists of many proteolytic enzymes as we'll see in just a moment. Now another type of peptide hormone that is released by the small intestine is CCK which stands for Colocysticina. Now, colocysticina is a peptide hormone that doesn't only stimulate the pancreas to release the pancreatic juice but it also stimulates the liver to produce the bile that is necessary to emulsify our fat to break down the surface area. Of the fat, to increase the surface area of the fat and to allow the lifepace, the proteolytic enzymes, to break down that fat efficiently and effectively. And finally, we have another hormone that is involved in the breakdown of fat.