allantois membrane

allantois membrane
membrana alantoides.

Nuevo Diccionario Inglés-Español. 2014.

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  • allantois — A fetal membrane developing from the hindgut (or yolk sac, in humans). In humans it is vestigial; externally, in mammals, it contributes to the formation of the umbilical cord and placenta; in birds and reptiles, it lies close beneath the porous… …   Medical dictionary

  • membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m …   Medical dictionary

  • allantois — /euh lan toh is, toys/, n. Embryol., Zool. a vascular, extraembryonic membrane of birds, reptiles, and certain mammals that develops as a sac or diverticulum from the ventral wall of the hindgut. [1640 50; < NL < Gk allantoeidés, wrongly taken… …   Universalium

  • allantois — noun (plural allantoides) Etymology: New Latin, ultimately from Greek allant , allas sausage Date: 1646 a vascular fetal membrane of reptiles, birds, and mammals that is formed as a pouch from the hindgut and that in placental mammals is… …   New Collegiate Dictionary

  • allantois — Outgrowth from the ventral side of the hindgut in embryos of reptiles, birds and mammals. Serves the embryo as a store for nitrogenous waste and in chick embryos fuses with the chorion to form the chorioallantoic membrane (CAM) …   Dictionary of molecular biology

  • ALLANTOIS —    a membrane enveloping the foetus in mammals, birds, and reptiles …   The Nuttall Encyclopaedia

  • allantois — n. sac like extraembryonic membrane which develops in certain animals (Zoology) …   English contemporary dictionary

  • allantois — [ə lantəʊɪs] noun (plural allantoides ɪdi:z) the fetal membrane lying below the chorion in many vertebrates. Derivatives allantoic adjective allantoid adjective Origin C17: mod. L., based on Gk allantoeidēs sausage shaped …   English new terms dictionary

  • allantois — al•lan•to•is [[t]əˈlæn toʊ ɪs, tɔɪs[/t]] n. pl. al•lan•to•i•des [[t]ˌæl ənˈtoʊ ɪˌdiz[/t]] dvl a nourishing membrane surrounding the embryo, between the amnion and chorion, in birds and reptiles developing as a sac from the hindgut and in mammals… …   From formal English to slang

  • allantois —   n. sac like fetal membrane developing into umbilical cord and forming part of placenta …   Dictionary of difficult words

  • Hühnerei-Test an der Chorion-Allantois-Membran — Der HET CAM, auch Hühnerei Test genannt, ist ein Verfahren zur Überprüfung der Hautverträglichkeit von Chemikalien. Die Abkürzung steht für Hühnerei Test an der Chorion Allantois Membran. Häufig wird die Abkürzung auch aus dem Englischen Hen s… …   Deutsch Wikipedia