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Concept information

Preferred term

extraembryonic membranes

Type

  • Topic

Definition

  • Information The thin layers of tissue that surround the developing embryo. There are four extra-embryonic membranes commonly found in vertebrates, such as reptiles; birds; and mammals. They are the yolk sac, the allantois, the amnion, and the chorion. These membranes provide protection and means to transport nutrients and wastes.

Broader concept

Synonyms

  • extra-embryonic membranes
  • fetal membranes
  • foetal membranes

In other languages

URI

https://lod.nal.usda.gov/nalt/105267

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RDF/XML TURTLE JSON-LD Created 1/19/06, last modified 9/5/13