Show Summary Details

Quick Reference

A membrane that encloses the embryo of reptiles, birds, and mammals within the amniotic cavity. This cavity is filled with amniotic fluid, in which the embryo is protected from desiccation and from external pressure. See also extraembryonic membranes.

Subjects: Biological Sciences — Medicine and Health.

Reference entries

See all related reference entries in Oxford Index »

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.