What is the function of the hormone cholecystokinin?

Cholecystokinin:

1. Cholecystokinin also called as CCK is a hormone secreted from enteroendocrine cells in the duodenum.
2. They help in the digestion of fat and proteins and is secreted by the digestive system
3. They help in suppressing hunger .
4. Because of the presence of Cholecystokinin digestive enzymes which break down complex molecule into simple absorbable molecules is possible.
5. These digestive enzymes are secreted by the gall bladder and the pancreas.