Final answer:
Secretin and cholecystokinin are hormones involved in the process of digestion. Secretin stimulates the release of bicarbonate-rich pancreatic juice, while cholecystokinin stimulates the release of enzyme-rich pancreatic juice and the contraction of the gallbladder.
Step-by-step explanation:
In the process of digestion, the hormones secretin and cholecystokinin play important roles. Secretin is released in response to acidic chyme in the duodenum and stimulates the pancreas to release bicarbonate-rich pancreatic juice. Cholecystokinin (CCK) is released in response to proteins and fats in the duodenum, and it stimulates the release of enzyme-rich pancreatic juice and the contraction of the gallbladder to release bile.