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Digestion & absorption intestinale

Duodenum

First section of the small intestine where chemical digestion continues intensely.

Definition

First part of the small intestine, approximately 25 cm in length, where bile and pancreatic enzymes are added to gastric chyme for further digestion.

How it works

The duodenum is the critical site where chemical digestion intensifies. Pancreatic secretions (containing enzymes like lipase and protease) and bile from the gallbladder are added to acidic gastric chyme.

Role

Continuing chemical digestion by receiving bile and pancreatic enzymes, neutralizing gastric acidity.

Examples

  • Digestion of butter fats
  • Disintegration of egg proteins
  • Transformation of complex sugars

Recommendations

Adopt a balanced diet with moderate portions to facilitate duodenal function. Stay well-hydrated to promote digestion. Limit high-fat foods requiring intense duodenal work.

Key takeaway

The duodenum is the center for coordination of chemical digestion where bile and the pancreas intervene.

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