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."
|Primary Medical Reviewer||Sarah Marshall, MD - Family Medicine|
|Specialist Medical Reviewer||William Gilbert, MD - Maternal and Fetal Medicine|
|Current as of||January 8, 2013|
WebMD Medical Reference from Healthwise