Which of the following hormones stimulates pancreatic secretions?

-histamine

-motilin

-gastrin

-secretin

The correct answer is: secretin

Secretin is a peptide hormone (produced in the S cells of the duodenum), that regulates secretions in the stomach, pancreas, and liver. Secretin is secreted in response to acid in the duodenum, so its role is to stimulate duct cells of the pancreas to secrete water and bicarbonate (regulating water homeostasis).