Final answer:
The digestive process is regulated by the secretion of hormones such as gastrin, secretin, and cholecystokinin (CCK), which control digestive secretions and help maintain the proper function of the digestive system.
Step-by-step explanation:
The digestive process is partially regulated by the secretion of various hormones into the bloodstream by the stomach and small intestine. The main digestive hormone of the stomach is gastrin, which stimulates the secretion of gastric acid necessary for digestion. Other hormones like secretin and cholecystokinin (CCK) are released by the duodenum in the small intestine. Secretin stimulates the pancreas to secrete a bicarbonate-rich solution to neutralize stomach acids, while CCK aids in the secretion of digestive enzymes and bile. These hormones are crucial in regulating digestive secretions and the motility of the gastrointestinal tract.