What happens when acidic stomach contents enter your small intestine?
Meet the duodenum—the first part of the small intestine—and discover how it helps prepare incoming stomach contents for further digestion.
In this 3D medical-science animation, follow acidic chyme into the duodenum, explore how specialized cells release the hormone secretin, and see how secretin signals the pancreas to deliver bicarbonate-rich fluid. Learn how this response helps neutralize acid while protective mucus and local bicarbonate secretion support the intestinal lining.
WHAT YOU'LL LEARN: • Where the duodenum sits in the digestive tract. • How acidic stomach contents trigger secretin release. • Why secretin stimulates pancreatic bicarbonate secretion. • How bicarbonate helps buffer gastric acid. • How the duodenum's protective mechanisms help defend its lining.
Explore duodenal anatomy, pancreatic secretions, secretin, bicarbonate, digestive physiology, and the science behind your body's remarkable coordination.
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