Help us test the new version of OLS, with updated versions of ontologies and lots of new features!

This is just here as a test because I lose it

Term information

database cross reference

uberon_slim, vertebrate_core

  • A tube extending from the mouth to the anus.
external definition
  • The alimentary or digestive tract, and associated organs.[TAO]
external ontology notes
  • FMA also has a term 'gastrointestinal tract', but this includes the liver.
  • we place the MA and EMAPA class here, although the intent is probably a smaller region. See
has exact synonym
  • enteric tract
  • digestive tube
has narrow synonym
  • alimentary tract
  • alimentary canal
has related synonym
  • gut tube
  • digestive canal
homology notes
  • The bilaterian gut is typically a complete tube that opens to the exterior at both ends. It consists of mouth, foregut, midgut, hindgut, and anus (reference 1); Although all vertebrates have a digestive tract and accessory glands, various parts of this system are not necessarily homologous, analogous, or even present in all species. Therefore, broad comparisons can be best made under the listings of headgut, foregut, midgut, pancreas and biliary system, hindgut (reference 2).[well established][VHOG]
  • UBERON:0001555
never in taxon
terminology notes
  • we following Kardong in naming the entire tube from mouth to anus the alimentary canal. Kardong calls the portion of this tract that excludes buccal cavity and pharynx the 'alimentary canal', consider adding an extra class for this