When a human embryo is approximately 7 days old,it embeds in the ________ of its mother's uterus,where it is nourished by the surrounding blood supply until the placenta is functional.

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The Answer of When a human embryo is approximately 7 days old,it embeds in the ________ of its mother's uterus,where it is nourished by the surrounding blood supply until the placenta is functional.

When a Human Embryo Is Approximately 7 Days Old,it Embeds