What triggers the release of secretin from the small intestine?

When hydrochloric acid passes from the stomach into the duodenum, secretin is released into the bloodstream and stimulates the acinar cells of the pancreas to secrete water and bicarbonate into the pancreatic ducts that drain into the duodenum. Thank you for this question.

The answer your looking for is a food chain grid. it describes how nature can support itself and survival of the fittest comes into play..