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efesto efesto
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6 years ago
The umbilical cord
A) has blood vessels that connect the embryo to the placenta.
B) has blood vessels that are directly connected to the mother's blood vessels.
C) develops during the period of the fetus.
D) is filled with amniotic fluid.
Textbook 
Children: A Chronological Approach, Canadian Edition

Children: A Chronological Approach, Canadian Edition


Edition: 5th
Authors:
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wrote...
6 years ago
A) has blood vessels that connect the embryo to the placenta.
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