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The information contained on this page is provided as general health information and is not intended to substitute as medical advice and direction from your physician or health care provider. Please direct any questions related to your health care provider. In an emergency, call 9-1-1 or go to the nearest emergency center.


Duodenum

Definition

The duodenum is the first part of the small intestine. It is located between the stomach and the middle part of the small intestine, or jejunum.

After foods mix with stomach acid, they move into the duodenum, where they mix with bile from the gallbladder and digestive juices from the pancreas.

The absorption of vitamins, minerals, and other nutrients begins in the duodenum.

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Digestive system

References

Drake RL, Vogl W, Mitchell AWM. Abdomen. In: Drake RL, Vogl W, Mitchell AWM, Tibbitts RM, Richardson PE, eds. Gray's Atlas of Anatomy. 2nd ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2015:chap 4.

Harris JW, Evers BM. Small intestine. In: Townsend CM, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 20th ed. Philadelphia, PA: Elsevier; 2017:chap 49.