Near the End of the First Trimester, Deoxygenated Blood Flows

question 70

Multiple Choice

Near the end of the first trimester, deoxygenated blood flows from the developing embryo or fetus to the placenta through

• A) paired umbilical veins.
• B) the superior vena cava.
• C) one umbilical vein.
• D) three umbilical arteries.
• E) paired umbilical arteries.

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