NALT

Preferred term

extraembryonic membranes

Topic

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.

embryo (animal)

extra-embryonic membranes
fetal membranes
foetal membranes

Field 001 in MARC Authority Format

53099

Spanish

membranas extraembrionarias
membranas extraembriónicas

URI

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

Download this concept

Created 1/19/06, last modified 9/5/13