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  2. 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 ...

  3. Umbilical cord - Wikipedia

    en.wikipedia.org/wiki/Umbilical_cord

    In placental mammals, the umbilical cord (also called the navel string, [1] birth cord or funiculus umbilicalis) is a conduit between the developing embryo or fetus and the placenta. During prenatal development , the umbilical cord is physiologically and genetically part of the fetus and (in humans) normally contains two arteries (the umbilical ...

  4. Fetal membranes - Wikipedia

    en.wikipedia.org/wiki/Fetal_membranes

    The human allantois is a caudal out-pouching of the yolk sac, which becomes surrounded by the mesodermal connecting stalk or body-stalk. The vasculature of the body-stalk develops into umbilical arteries that carry deoxygenated blood to the placenta. [12] It is externally continuous with the proctodeum and internally continuous with the cloaca.

  5. Placenta - Wikipedia

    en.wikipedia.org/wiki/Placenta

    The placenta (pl.: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation.It plays critical roles in facilitating nutrient, gas and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ, producing hormones that regulate both maternal and fetal ...

  6. Connecting stalk - Wikipedia

    en.wikipedia.org/wiki/Connecting_stalk

    The amniotic membrane and its contents form the umbilical cord that connects the embryo and the placenta. [3] [4] The root of the connecting stalk contains the allantois as a diverticulum of hindgut endoderm along with umbilical vessels. [5] [2] Anomalies are usually referred to as body stalk anomalies and occur in approximately 1 in 15,000 ...

  7. Allantois - Wikipedia

    en.wikipedia.org/wiki/Allantois

    The human allantois is a caudal out-pouching of the yolk sac, which becomes surrounded by the mesodermal connecting stalk known as the body-stalk. The vasculature of the body-stalk develops into umbilical arteries that carry deoxygenated blood to the placenta. [5] It is externally continuous with the proctodeum and internally continuous with ...

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

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

    Delaying the clamping allows blood to flow from the placenta to the baby while the baby’s lungs fill with air. ... Waiting at least two minutes before clamping the umbilical cord of a premature ...

  9. Development of the reproductive system - Wikipedia

    en.wikipedia.org/wiki/Development_of_the...

    A.—Diagram of the primitive urogenital organs in the embryo previous to sexual distinction. The common genital cord is labeled with gc. * 3. Ureter * 4. Urinary bladder * 5. Urachus * cl. Cloaca * cp. Elevation which becomes clitoris or penis * i. Lower part of the intestine * ls.