Zoology - Digestion and Absorption Question with Solution | TestHub

Gastrin is secreted by stomach and acts on the stomach. It stimulates the gastric gland to release gastric juice.

Secretin is secreted by duodenum and acts on the pancreas, liver, and stomach. It is excitatory to pancrease but is inhibitory to the gastric glands.

CCK (Cholecystokinin) is also known as pancreozymins and is secreted from small intestine and cause the release of digestive enzymes and bile from the pancreas and gallbladder, respectively.