Definitions for villusˈvɪl əs; ˈvɪl aɪ

This page provides all possible meanings and translations of the word villus

Princeton's WordNet

  1. villus(noun)

    a minute hairlike projection on mucous membrane

Wiktionary

  1. villus(Noun)

    a small projection from a mucous membrane, particularly those found in the intestines

Webster Dictionary

  1. Villus(noun)

    one of the minute papillary processes on certain vascular membranes; a villosity; as, villi cover the lining of the small intestines of many animals and serve to increase the absorbing surface

  2. Villus(noun)

    fine hairs on plants, resembling the pile of velvet

  3. Origin: [L., shaggy hair, a tuft of hair.]

Freebase

  1. Intestinal villus

    Intestinal villi are small, finger-like projections that protrude from the epithelial lining of the intestinal wall. Each villus is approximately 0.5-1.6 mm in length, and has many microvilli projecting from the enterocytes of its epithelium which collectively form the striated or brush border. Each of these microvilli are much smaller than a single villus. The intestinal villi are much smaller than any of the circular folds in the intestine. Villi increase the internal surface area of the intestinal walls making available a greater surface area for absorption. An increased absorptive area is useful because digested nutrients pass into the semipermeable villi through diffusion, which is effective only at short distances. In other words, increased surface area decreases the average distance travelled by nutrient molecules, so effectiveness of diffusion increases. The villi are connected to the blood vessels so the circulating blood then carries these nutrients away.


Translations for villus

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