Concept information
Preferred term
extraembryonic membranes
Type
-
Topic
Definition
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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
Synonyms
- extra-embryonic membranes
- fetal membranes
- foetal membranes
In other languages
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Spanish
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membranas extraembriónicas
URI
https://lod.nal.usda.gov/nalt/105267
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