What is the physiological function of gastrin?

The physiological effects of gastrin generally include promoting gastric movement and emptying, stimulating gastric acid secretion, stimulating insulin secretion, etc.

1. Promoting gastric movement and emptying

gastrin can stimulate gastric contraction and movement, increasing gastric motility, thus promoting gastric emptying.

2. Stimulating gastric acid secretion

gastrin can stimulate gastric epithelial cells to secrete gastric acid, increase gastric acid concentration, and help digest and absorb protein in food.

3. Stimulating insulin secretion

gastrin can stimulate islet beta cells to secrete insulin, promote glucose absorption and utilization in tissues, and reduce blood sugar concentration.