The tiny hair-like projections that protrude from the inside of the small intestine that contain blood vessels that capture digested nutrients that are absorbed through the intestinal wall; the villi increase the absorptive surface area of the small intestine by approximately 30-fold. [ http://www.informatics.jax.org/accession/csmith MP : 0008108 http://www.informatics.jax.org/accession/rbabiuk ]

This is just here as a test because I lose it

Term information

Subsets

uberon_slim, pheno_slim, vertebrate_core

plural term
enteric villi [ HP : 0011473 ]
plural term
intestinal villi [ ZFA : 0005125 ]
plural term
villi intestinales
definition
  • The tiny hair-like projections that protrude from the inside of the small intestine that contain blood vessels that capture digested nutrients that are absorbed through the intestinal wall; the villi increase the absorptive surface area of the small intestine by approximately 30-fold.
depicted by
  • http://upload.wikimedia.org/wikipedia/commons/3/38/Small_intestine_low_mag.jpg
editor note
  • in mammals, villi are (largely?) absent from the large intestine, so we treat this as equivalent to small intestinal villus. small/large subdivision may not make sense for all species for which this is present (see ZFA). Note that VHOG quotes ISBN:978-0030223693 as suggesting there are some villi in the large intestine
external definition
  • The entire digestive tract is lined by well developed villi, which are longest in the intestinal bulb and decrease progressively in size towards the caudal end of the intestine. No crypts are present, but, the regions between the villi, the intervillus pockets, have a crypt-like function. Cells are produced in the intervillus pockets and shed from the villus tips. Crosnier et al. 2005[TAO]
external ontology notes
  • the BTO class refers to a generic villous
has alternative id
  • UBERON:0007607
has exact synonym
  • villus intestinalis (intestinum tenue)
  • enteric villus
  • enteric villi
  • villi intestinales
  • villus
  • enteric villous
  • intestinal villi
has related synonym
  • small intestine villus
  • villi intestinales
  • intestinal villus layer
id
  • UBERON:0001213