villus


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Related to villus: chorionic villus sampling, chorionic villus

villus

1. Zoology anatomy any of the numerous finger-like projections of the mucous membrane lining the small intestine of many vertebrates
2. any similar membranous process, such as any of those in the mammalian placenta
3. Botany any of various hairlike outgrowths, as from the stem of a moss

villus

[′vil·əs]
(anatomy)
A fingerlike projection from the surface of a membrane.
References in periodicals archive ?
Effects of TB on intestinal morphology of broilers challenged with LPS LPS (0 [micro]g/kg BW) TB (0 mg/kg) TB (500 mg/kg) Duodenum ([micro]m) Villus height 1,161 (a) 1,001 (b) Crypt depth 194 190 Villus: crypt 6.
The answer lies in examples such as the relationships between villus structure and nutrient absorption in the small intestine (Figure 1), nephron structure and water retention in the kidneys (Figure 2), alveolus structure and gas exchange in the lungs (Figure 3), root-hair structure and nutrient absorption in plants, leaf ventation and nutrient transport (Figure 4), and any other function in which surface area is key to life support.
1% of all pregnant women needing referrals for amniocentesis or chorionic villus sampling.
The total cost of a first-trimester screen which included chorionic villus sampling (CVS) and genetic analysis was R2 426.
The loops are running out from the arterioles or capillaries of the mature intermediate villus.
The large growth was "a villus adenomat ous-appearing polyp", which had sometimes proved to be pre-cancerous in the past, Mr.
Amniocentesis is associated with a one-in-two hundred incidence, and chorionic villus sampling with a one-in-one hundred incidence of abortion of the unborn child.
Both amniocentesis and another procedure called chorionic villus sampling, in which doctors pluck bits of the placenta, isolate fetal cells that can reveal many genetic problems in an unborn baby with near certainty.
Previously, the only way to know if a woman was having a baby with Down's was with second-trimester blood tests and/or invasive amniocentesis or chorionic villus sampling (CVS) tests, all of which carry a slight risk of miscarriage.
Certain expecting mothers with RhD negative blood may submit to a set of invasive tests to determine the blood type of the fetus, which may include penetrating the mother's womb with a large needle to extract amniotic fluid or chorionic villus sample (amniocentesis or chorionic villus sampling ), which can increase risk of miscarriage.