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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. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    The basic outlines of the organ, body, and nervous systems are established. By the end of the embryonic stage, the beginnings of features such as fingers, eyes, mouth, and ears become visible. Also during this time, there is development of structures important to the support of the embryo, including the placenta and umbilical cord .

  6. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    The placenta provides oxygen and nutrients to growing fetuses and removes waste products from the fetus' blood. The placenta attaches to the wall of the uterus, and the fetus' umbilical cord develops from the placenta. These organs connect the mother and the fetus.

  7. Umbilical artery - Wikipedia

    en.wikipedia.org/wiki/Umbilical_artery

    The umbilical arteries are actually the anterior division of the internal iliac arteries, and retain part of this function after birth. [3] The umbilical arteries are one of two arteries in the human body, that carry deoxygenated blood, the other being the pulmonary arteries. The pressure inside the umbilical artery is approximately 50 mmHg. [4]

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

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

    "In these cases the entire placenta and umbilical cord need to be sent to the laboratory for examination," she says. "The parent would have to speak with the laboratory to determine if a piece of ...

  9. 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 ...