The first part of the small intestine. At the junction of the stomach and the duodenum the alimentary canal is inflected. The duodenum first goes anteriorly for a short distance, turns dorsally, and eventually caudally, thus it is a U-shaped structure with two horizontal sections (a ventral and a dorsal one). [ https://www.worldcat.org/search?q=bn%3A0815318960 http://en.wikipedia.org/wiki/Duodenum ]

This is just here as a test because I lose it

Term information

database cross reference
Subsets

uberon_slim, efo_slim, pheno_slim, vertebrate_core

definition
  • The first part of the small intestine. At the junction of the stomach and the duodenum the alimentary canal is inflected. The duodenum first goes anteriorly for a short distance, turns dorsally, and eventually caudally, thus it is a U-shaped structure with two horizontal sections (a ventral and a dorsal one).
depicted by
  • http://upload.wikimedia.org/wikipedia/commons/b/b3/Tractus_intestinalis_duodenum.svg
external definition
  • The fixed portion of the small intestine deeply lodged in the posterior wall of the abdomen and extending from the pylorus to the beginning of the jejunum. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG]
has related synonym
  • upper intestine
  • proximal intestine
id
  • UBERON:0002114
taxon notes
  • In fish, the divisions of the small intestine are not as clear, and the terms anterior intestine or proximal intestine may be used instead of duodenum.
  • In humans, the duodenum is a hollow jointed tube about 10-15 inches (25-38 centimetres) long connecting the stomach to the jejunum. It begins with the duodenal bulb and ends at the ligament of Treitz.