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NALT Concept Space
U.S. Department of Agriculture

NALT Core

Concept information

  1. Fields of Study
  2. animal science
  3. anatomy and morphology
  4. embryonic structures
  5. embryo (animal)
  6. extraembryonic membranes
  1. Animals, Livestock, One Health
  2. animal science
  3. anatomy and morphology
  4. embryonic structures
  5. embryo (animal)
  6. extraembryonic membranes

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.

    Source: Medical Subject Headings 2012

    Type: Concept definition

Broader concept

Narrower concepts

Related concepts

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