Coronavirus (COVID-19)
Learn more
< Back to Health Library
The amniotic sac, or amnion, is a lining (membrane) inside the uterus that contains the fetus and the fluid that cushions the fetus (amniotic fluid). The amniotic sac is also called the "bag of waters."
Current as of: May 1, 2026
Author: WebMD Ignite Staff
Clinical Review Board All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
This information does not replace the advice of a doctor. WebMD Ignite disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use and Privacy Policy. Learn how we develop our content.
To learn more about WebMD Ignite, visit webmdignite.com.
© 2024-2026 WebMD Ignite.
View All Categories
Loading...