The membranous bag that surrounds the foetus and becomes filled with amniotic fluid as pregnancy advances.
Found on http://www.encyclo.co.uk/local/20415
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 on http://www.babycentre.co.uk/glossary/a/
The pouch containing the embrionic fetus.
Found on http://www.gadsbywicks.co.uk/uploaded/3822.pdf
Amniotic sac: Popularly and more commonly known as the bag of waters. See: Bag of waters.
Found on http://www.medterms.com/script/main/art.asp?articlekey=23964
Sac, enclosing the embryo of amniote vertebrates, that provides a fluid environment to prevent dehydration during development of land-based animals. See amnion.
Found on http://www.encyclo.co.uk/visitor-contributions.php
<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 on http://www.mondofacto.com/facts/dictionary?amniotic+sac
the sac formed by the amnion, enclosing the fetus suspended in amniotic fluid; popularly known as the bag of waters.
Found on http://www.encyclo.co.uk/local/21001
(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 on http://www.britannica.com/eb/a-z/a/64
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 on http://en.wikipedia.org/wiki/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 on http://www.daviddarling.info/encyclopedia/A/amniotic_sac.html
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 on http://www.pregnology.com/AZ/A/6
Found on http://www.whattoexpect.com/pregnancy/glossary/a.aspx
a thin-walled sac that surrounds the fetus during pregnancy. The sac is filled with amniotic fluid
Found on http://nyp.org/health/pregnant-glossary.html
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