villus


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vil·lus

 (vĭl′əs)
n. pl. vil·li (vĭl′ī)
1. Biology A minute projection arising from a mucous membrane, especially:
a. One of the numerous vascular projections of the small intestine.
b. One of the fingerlike projections of the chorion that contribute to the formation of the placenta in mammals.
2. Botany A fine, hairlike epidermal outgrowth.

[Latin, shaggy hair.]

villus

(ˈvɪləs)
n (usually plural) , pl villi (ˈvɪlaɪ)
1. (Zoology) zoology anatomy any of the numerous finger-like projections of the mucous membrane lining the small intestine of many vertebrates
2. (Anatomy) zoology anatomy any of the numerous finger-like projections of the mucous membrane lining the small intestine of many vertebrates
3. (Zoology) any similar membranous process, such as any of those in the mammalian placenta
4. (Botany) botany any of various hairlike outgrowths, as from the stem of a moss
[C18: from Latin: shaggy hair]

vil•lus

(ˈvɪl əs)

n., pl. vil•li (ˈvɪl aɪ)
1. any of the fingerlike projections on the surface of certain membranes, esp. on the mucous membrane of the small intestine, functioning to increase the area for the absorption, secretion, or exchange of materials.
2. any of the long, soft, straight hairs covering the fruit, flowers, and other parts of certain plants.
[1695–1705; < Latin: shaggy hair, thick nap]

vil·lus

(vĭl′əs)
Plural villi (vĭl′ī)
A small projection on the surface of a mucous membrane, especially that of the small intestine.

villus

(pl. villi) A minute fingerlike projection. Huge numbers line the small intestine, vastly increasing its surface area.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.villus - a minute hairlike projection on mucous membranevillus - a minute hairlike projection on mucous membrane
chorionic villus - one of the tiny villi that stick out of the fetal chorion and combine with the mother's uterine tissue to form the placenta
appendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant; "a bony process"
Translations

vil·lus

n. vellosidad, vello, proyección filiforme que crece en una superficie membranosa;
aracnoid ______ aracnoidea;
chorionic ______ -es coriónicas;
intestinal ______ intestinal.
References in periodicals archive ?
So far 284 pregnant women from thalassemia affected families went through chorionic villus sampling (CVS) test, which is a form of parental diagnosis to determine genetic disorder in unborn child.
Many investigators believe that this lesion is due to replacement of the villus by fibrin, this being formed either from the maternal blood in the intervillous space or from the fetal blood in the villous capillaries25.
It improves the villus size, ultimately feed utilization increase (Jahejo et al., 2016).
A, Eosinophilic debris within a fibrotic pink villus. B, Intranuclear and intracytoplasmic viral inclusions within villous stromal cells (hematoxylin-eosin, original magnifications X20 [A] and X100 [B]).
Finally, whether all followers of Shiner realize this point, it should be understood that Shiner's definition of "atrophy" inevitably commits its users to the false concept that each villus is individually reduced to nothing as the mucosa deteriorates.
Supplementation of10 g/kg Arg, has reduced the susceptibility to PHS and improved gut function through increase in villus height (VH) of small intestine in broilers reared at high altitude [8].
Another cause of low p[O.sub.2] in the chorionic villus blood may be the excessive thickness of the placental barrier (Kumar et al., 2000).
The number of vascular channels present in terminal villi ranges from 2 to 6 and if the number increases beyond this then it is termed as 'villous hypervascularity (1).' The term 'chorangiosis' was introduced by Altshuler in 1984 and is defined as the presence of [greater than or equal to]10 terminal villi, each containing [greater than or equal to]10 capillaries per terminal villus in [greater than or equal to]10 low power (10x) fields in at least 3 or more random, non-infarcted cotyledons of the placenta (2).
In the evaluation of ileal tissues, each field was scored semi-quantitatively between 0 and 3 in terms of inflammatory cell infiltration, haemorrhage, villus fusion, and villus apical facial epithelium degeneration.
The lower crypt compartment consists of pluripotent stem cells residing at the bottom of the crypt, recently identified by the stem cell marker Lgr5 and proliferating transit amplifying cells that differentiate into mature cell lineages (Absorptive, goblet and enteroendocrine cells) during migration toward the villus compartment.
Training about Ultrasound, SPSS and chorionic villus sampling will also be held.
C: Duodenal tissues of iron +DFO treated group show an eroded villus (EV) with area of single epithelial columnar layer (CE) and another part shows stratified epithelial lining (SE).