amniotic sac


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Related to amniotic sac: placenta, amniotic fluid, yolk sac
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.amniotic sac - thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)amniotic sac - thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
amniote - any member of the Amniota
mammal, mammalian - any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk
fetal membrane - any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
sac - a structure resembling a bag in an animal
References in periodicals archive ?
But paramedic Ian Nattrass was stunned to see Katie was still inside her amniotic sac.
But the paramedic was stunned to see that Katie was still inside her amniotic sac.
During pregnancy, the bag of waters (or amniotic sac) keeps the baby safe as she/he grows.
Thomas Ridsdill, 40, had to help birth little Heather Ridsdill who was born caul, where membrane - similar to the amniotic sac - covers a newborn baby's head.
The incredible snaps showed the entire body of the baby boy, named Noah, engulfed in the amniotic sac, after being born by C-section, giving him an alien-like appearance.
They cut a small hole in the uterus wall to access the foetus inside the amniotic sac.
One amniotic sac contained a normal fetus [Figure 1]a, while the other amniotic sac had a set of conjoined twins fused through the thorax and abdomen with two heads, two separate hearts, four arms, four legs, and a single umbilical cord [Figure 1]b.
The calf may still be encased in the amniotic sac, which is a firm membrane filled with thick amniotic fluid.
"Water helps to form the placenta and amniotic sac and is a key component of breast milk.