This Is One of the Life-Support Systems of the Embryo

question 43

Short Answer

This is one of the life-support systems of the embryo.It is a disk-shaped group of tissues in which small blood vessels from the mother and the offspring intertwine.Oxygen,water,salt,and food from the mother's blood are passed to the embryo.Carbon dioxide and digestive wastes from the embryo pass to the mother.

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Definitions:

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