Duodenum: The upper part of the small intestine that connects the lower part of the stomach with the jejunum.


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Duodenum: The shortest and widest portion of the Small Intestine adjacent to the Pylorus of the Stomach. It is named for having the length equal to about the width of 12 fingers.2

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Duodenum adverse event: A digestive system adverse event that occurs at duodenum3

Anatomical Information about Duodenum

The duodenum is the first part of the small intestine—the tube-shaped organ between the stomach and the large intestine—where digestion of the food and liquid continues.

Source: NIDDK (NIH)4

Anatomy Articles

Read about these related anatomy topics:

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  1. Source: RDCRN (NCATS/NIH): rarediseasesnetwork.org/ cms/ cegir/ Learn-More/ Glossary
  2. Source: MeSH (U.S. National Library of Medicine)
  3. Source: OAE Ontology
  4. Source: NIDDK (NIH): niddk.nih.gov/ health-information/ digestive-diseases/ zollinger-ellison-syndrome

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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.