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  2. Umbilical cord - Wikipedia

    en.wikipedia.org/wiki/Umbilical_cord

    The term "umbilical cord" or just "umbilical" has also come to be used for other cords with similar functions, such as the hose connecting surface-supplied divers to their surface supply of air and/or heating, or space-suited astronauts to their spacecraft. Engineers sometimes use the term to describe a complex or critical cable connecting a ...

  3. Fetal circulation - Wikipedia

    en.wikipedia.org/wiki/Fetal_circulation

    The fetal circulation is composed of the placenta, umbilical blood vessels encapsulated by the umbilical cord, heart and systemic blood vessels. A major difference between the fetal circulation and postnatal circulation is that the lungs are not used during the fetal stage resulting in the presence of shunts to move oxygenated blood and ...

  4. Yolk sac - Wikipedia

    en.wikipedia.org/wiki/Yolk_sac

    The yolk sac is the first element seen within the gestational sac during pregnancy, [1] usually at three days gestation. The yolk sac is situated on the front ( ventral ) part of the embryo ; it is lined by extra-embryonic endoderm , [ 3 ] outside of which is a layer of extra-embryonic mesenchyme , derived from the epiblast.

  5. Gestational sac - Wikipedia

    en.wikipedia.org/wiki/Gestational_sac

    The gestational sac is spherical in shape, and is usually located in the upper part (fundus) of the uterus.By approximately nine weeks of gestational age, due to folding of the trilaminar germ disc, the amniotic sac expands and occupy the majority of the volume of the gestational sac, eventually reducing the extraembryonic coelom (the gestational sac or the chorionic cavity) to a thin layer ...

  6. Fetal membranes - Wikipedia

    en.wikipedia.org/wiki/Fetal_membranes

    The amnion is the innermost layer and, therefore, contacts the amniotic fluid, the fetus and the umbilical cord. [5] The internal pressure of the amniotic fluid causes the amnion to be passively attached to the chorion. [4] The chorion functions to separate the amnion from the maternal decidua and uterus. [4]

  7. Deferred umbilical cord clamping reduces premature baby death ...

    www.aol.com/deferred-umbilical-cord-clamping...

    In a subgroup of premature babies born before 32 weeks of pregnancy, 44.9% (449/1001) with immediate cord clamping experienced hypothermia after birth, compared to 51.2% (509/994) of those with ...

  8. Chorionic villi - Wikipedia

    en.wikipedia.org/wiki/Chorionic_villi

    They are an essential element in pregnancy from a histomorphologic perspective, and are, by definition, a product of conception. Branches of the umbilical arteries carry embryonic blood to the villi. After circulating through the capillaries of the villi, blood returns to the embryo through the umbilical vein. Thus, villi are part of the border ...

  9. Why are you suddenly seeing umbilical cords all over social ...

    www.aol.com/news/umbilical-cord-keepsakes-going...

    While umbilical cord keepsakes are going viral on social platforms like TikTok, the preservation practice is not new. Carmen Calvo, 43, of San Antonio, Texas, has been creating keepsakes from ...

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