k Human placenta, illustration Human placenta, illustration. This is the fetal side of the placenta. The cut membranes are the amnion, chorion and the decidua of the uterus. The amnion covering the umbilicus has been removed, showing the umbilical vein blue and the two umbilical arteries red. Large chorionic vessels on the placenta surface converge to the umbilical cord. Compartments of the placental tissue are called cotyledons. At birth the placenta is 1525 cm in diameter, 3 cm thick, and weighs about 500 g. From Lizars, J. 1823 A system of anatomical plates of the human body. W. H.Lizars, Edinburgh., by MICROSCAPESCIENCE PHOTO LIBRARY Stock Photo - Afloimages
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Human placenta, illustration Human placenta, illustration. This is the fetal side of the placenta. The cut membranes are the amnion, chorion and the decidua  of the uterus . The amnion covering the umbilicus has been removed, showing the umbilical vein  blue  and the two umbilical arteries  red . Large chorionic vessels on the placenta surface converge to the umbilical cord. Compartments of the placental tissue are called cotyledons. At birth the placenta is 15 25 cm in diameter, 3 cm thick, and weighs about 500 g. From Lizars, J. 1823 A system of anatomical plates of the human body. W. H.Lizars, Edinburgh., by MICROSCAPE SCIENCE PHOTO LIBRARY
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Human placenta, illustration

Human placenta, illustration. This is the fetal side of the placenta. The cut membranes are the amnion, chorion and the decidua (of the uterus). The amnion covering the umbilicus has been removed, showing the umbilical vein (blue) and the two umbilical arteries (red). Large chorionic vessels on the placenta surface converge to the umbilical cord. Compartments of the placental tissue are called cotyledons. At birth the placenta is 15-25 cm in diameter, 3 cm thick, and weighs about 500 g. From Lizars, J. 1823 A system of anatomical plates of the human body. W. H.Lizars, Edinburgh., by MICROSCAPE/SCIENCE PHOTO LIBRARY

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