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			| Amniotic SacThe 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:
                March 16, 2017Author:
          Healthwise Staff  Medical Review:
          Sarah A. Marshall, MD - Family Medicine & Adam Husney, MD - Family Medicine & William M. Gilbert, MD - Maternal and Fetal Medicine |  |  |  |  |  |