vitelline sac
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
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
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
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
