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.”
Author:Jeannette Curtis
Caroline Rea, RN, BS, MS
Caroline Rea, RN, BS, MS
Medical Review:
Last Updated: 05/25/2007
