Regulation of Digestion

Regulation of Digestion - Regulation of Digestion

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Regulation of Digestion The activities of the digestive system are regulated by both hormones and neural reflexes. Four  important hormones and their effects on target cells follow:  Gastrin is produced by enteroendocrine cells of the stomach mucosa. Effects include: Stimulation of gastric juice (especially HCl) secretion by gastric glands. Stimulation of smooth muscle contraction in the stomach, small intestine, and  large intestine, which increases gastric and intestinal motility. Relaxation of the pyloric sphincter, which promotes gastric emptying into the  small intestine. Secretin is produced by the enteroendocrine cells of the duodenal mucosa. Effects  include: Stimulation of bicarbonate secretion by the pancreas, which stabilizes the pH  of the chyme when released into the duodenum. Stimulation of bile production by the liver.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online