vitelline sac

* * *

yolk s.

Medical dictionary. 2011.

Look at other dictionaries:

  • vitelline sac — noun membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional • Syn: ↑yolk sac, ↑umbilical vesicle, ↑vesicula umbilicus • Hypernyms: ↑sac …   Useful english dictionary

  • vitelline sac — yolk sac …   The new mediacal dictionary

  • Мешок Желточный (Yolk Sac, Vitelline Sac) — внезародышевый орган мешок, образованный слоем мезодермы, выстланного эндодермой; расположен вблизи пупочной области развивающегося зародыша. Вначале тесно связан с эмбриональной кишкой, однако со временем эта связь сохраняется лишь в виде узкого …   Медицинские термины

  • Vitelline duct — Fetus of about eight weeks, enclosed in the amnion. (Vitelline duct labeled at lower right.) …   Wikipedia

  • Vitelline veins — The liver and the veins in connection with it, of a human embryo, twenty four or twenty five days old, as seen from the ventral surface. (Vitelline veins visible at center bottom.) Gray s …   Wikipedia

  • Vitelline circulation — refers to the system of blood flowing from the embryo to the yolk sac and back again.The yolk sac is situated on the ventral aspect of the embryo; it is lined by entoderm, outside of which is a layer of mesoderm. It is filled with fluid, the… …   Wikipedia

  • Sac vitellin — ● Sac vitellin synonyme de vésicule vitelline et de vitellus …   Encyclopédie Universelle

  • sac — 1. A pouch or bursa. SYN: saccus [TA]. SEE ALSO: sacculus. 2. An encysted abscess at the root of a tooth. 3. The capsule of a tumor, or envelope of a cyst. [L. saccus, a …   Medical dictionary

  • vitelline — ● vitellin, vitelline adjectif (latin vitellus, jaune d œuf) Qui se rapporte au vitellus ; qui le contient. ● vitellin, vitelline (expressions) adjectif (latin …   Encyclopédie Universelle

  • Sac vitellin — Vésicule vitelline Alevin de saumon avec son sac vitellin La vésicule vitelline (ou lécithocèle) est une réserve de matière nutritive présente au début de la vie des organismes. Chez le poisson nouvellement éclos, on parle d un sac vitellin, une… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.