Which hormone increases stomach motility and acid production?

The hormone that increases stomach motility and acid production is gastrin. Gastrin is secreted by G cells located in the stomach lining, particularly in response to the presence of food. When gastrin is released into the bloodstream, it stimulates the parietal cells of the stomach to secrete more hydrochloric acid, which aids in digestion. Additionally, gastrin enhances gastric motility, promoting the movement of food through the stomach and into the small intestine.

This function is essential for effective digestion, as increased acid production creates the optimal pH for digestive enzymes to work efficiently. The stimulation of stomach motility further facilitates the breakdown and mixing of food, which is crucial for proper nutrient absorption later in the digestive process.