what is placenta? Describe about any three kinds of placenta studied by you.
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placenta carries the nutrition from mother to the embryo.
complete placenta previa: The internal cervical opening is completely covered by the placenta.
partial placenta previa: The internal cervical opening is partially covered by the placenta.
marginal placenta previa: The placenta is at the edge of the internal cervical opening.
complete placenta previa: The internal cervical opening is completely covered by the placenta.
partial placenta previa: The internal cervical opening is partially covered by the placenta.
marginal placenta previa: The placenta is at the edge of the internal cervical opening.
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