TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

VITELLINE SAC [1 record]

Record 1 2021-01-07

English

Subject field(s)
  • Animal Reproduction
  • Pregnancy
DEF

A membranous sac of most vertebrates that encloses the yolk, is attached in most forms (as in humans) through the yolk stalk with the intestinal cavity of the embryo, and is supplied with blood vessels that transport nutritive yolk products to the developing embryo.

OBS

In birds and reptiles, the yolk sac encloses the yolk; in most mammals, a fluid replaces the yolk.

French

Domaine(s)
  • Reproduction des animaux
  • Grossesse
CONT

Le sac vitellin représente un vestige de l'évolution des vertébrés.

Spanish

Campo(s) temático(s)
  • Reproducción de animales
  • Embarazo
DEF

Cavidad que contiene la yema, a cuyas expensas ocurre el desarrollo embrionario de aves, peces y reptiles; un órgano homólogo, sin yema, se encuentra en el embrión de la mayoría de los mamíferos.

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