Amniotic Sac

Amniocentesis (also referred to as amniotic fluid test or AFT), is a medical procedure used in prenatal diagnosis of ... fluid, which contains fetal tissues, is extracted from the amnion or amniotic sac surrounding a developing fetus, and the fetal DNA is examined for genetic abnormalities.

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... I googled to see what it is and its actually the first stool of an infant. It has more of a tarry consistency. Sometimes its expelled into the amniotic fluid and the baby inhales it. Wiki has a page on it http://en.wikipedia.org/wiki/Meconium

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Reptiles developed the amniotic egg and internal fertilisation. there reproduction was truly water-independent. Since fertilization takes place inside the body of the female it does not require water(take note that external fertilization ...

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... have resolved the problem of sperm finding eggs, since the female only lays eggs when the male is there to fertilise them. Reptiles developed the amniotic egg and internal fertilisation. there reproduction was truly water-independent. Since fertilization takes place inside the body of the female ...

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... birds, and mammals produce 4 extraembryonic membranes: amnion yolk sac chorion, and allantois With these four membranes, the developing embryo ... on essential metabolism while sealed within the egg . Surrounded by amniotic fluid, the embryo is kept as moist as a fish embryo in a pond.

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