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Concept information

Preferred term

Allantois  

Type

  • mesh:Descriptor

Definition

  • An extra-embryonic membranous sac derived from the YOLK SAC of REPTILES; BIRDS; and MAMMALS. It lies between two other extra-embryonic membranes, the AMNION and the CHORION. The allantois serves to store urinary wastes and mediate exchange of gas and nutrients for the developing embryo.

Broader concept

Entry terms

  • Allantoic Membrane

In other languages

  • French

  • Membrane allantoïde
  • Membrane allantoïdienne

URI

http://data.loterre.fr/ark:/67375/JVR-V3SKF5R4-B

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