1. 
   Amniotic Sac
   The membranous bag that surrounds the foetus and becomes filled with amniotic fluid as pregnancy advances.
   Found op http://www.encyclo.co.uk/local/20415
   
   
2. 
   amniotic sac
   The sac or 'bag of waters' filled with amniotic fluid in which the developing baby grows. The membranes which make up the sac may occasionally rupture naturally as labour begins, but usually remain intact until the end of the first stage of labour. The membranes may also be broken by a midwife or do...
   Found op http://www.babycentre.co.uk/glossary/a/
   
   
3. 
   Amniotic sac
   The pouch containing the embrionic fetus.
   Found op http://www.gadsbywicks.co.uk/uploaded/3822.pdf
   
   
4. 
   Amniotic sac
   Amniotic sac: Popularly and more commonly known as the bag of waters. See: Bag of waters.
   Found op http://www.medterms.com/script/main/art.html?articlekey=23964
   
   
5. 
   amniotic sac
   Sac, enclosing the embryo of amniote vertebrates, that provides a fluid environment to prevent dehydration during development of land-based animals. See amnion.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
6. 
   amniotic sac
   <anatomy, obstetrics> Sac, enclosing the embryo of amniote vertebrates, that provides a fluid environment to prevent dehydration during development of land based animals. ... See: amnion. ... (18 Nov 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?amniotic+sac
   
   
7. 
   amniotic sac
   the sac formed by the amnion, enclosing the fetus suspended in amniotic fluid; popularly known as the bag of waters.
   Found op http://www.encyclo.co.uk/local/21001
   
   
8. 
   amniotic sac
   (from the article `amnion`) in reptiles, birds, and mammals, a membrane forming a fluid-filled cavity (the amniotic sac) that encloses the embryo. The amniotic sac and the ...
   Found op http://www.britannica.com/eb/a-z/a/64
   
   
9. 
   Amniotic sac
   The amniotic sac is the sac in which the fetus develops in amniotes. It is a tough but thin transparent pair of membranes, which hold a developing embryo (and later fetus) until shortly before birth. The inner membrane, the amnion, contains the amniotic fluid and the fetus. The outer membrane, the ...
   Found op http://en.wikipedia.org/wiki/Amniotic_sac
   
   
10. 
    amniotic sac
    The fetus in vitro, showing amniotic sac Credit: University of Utah, Health Sciences Center The membranous bag that surrounds the fetus and fills with watery amniotic fluid as pregnancy advances. The amniotic sac is made up of two membranes, the inner amnion and the outer chorion.
    Found op http://www.daviddarling.info/encyclopedia/A/amniotic_sac.html
    
    
11. 
    Amniotic Sac
    The sac that surrounds the developing baby inside of a pregnant woman's uterus. The sac contains the baby, the placenta and the amniotic fluid. Synonym(s): Bag of waters Amnion Gestational Sac
    Found op http://www.pregnology.com/AZ/A/6
    
    

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