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___________pass(es) from the maternal blood to the fetal blood. Fetal__________ pass(es) the other way.

A.

Wastes; nutrients and oxygen

B.

Oxygen and nutrients; wastes

C.

Wastes and nutrients; oxygen and carbon dioxide

D.

Carbon dioxide; nutrients

Answer and Explanation

The Correct Answer is B

A. Wastes; nutrients and oxygen: Wastes pass from the fetal blood to the maternal blood, and nutrients and oxygen pass from the maternal blood to the fetal blood.

B. Oxygen and nutrients; wastes: Oxygen and nutrients pass from maternal blood to fetal blood, and wastes pass from fetal blood to maternal blood.

C. Wastes and nutrients; oxygen and carbon dioxide: Nutrients and oxygen pass from maternal to fetal blood, while wastes and carbon dioxide pass from fetal to maternal blood. This option is incorrect because it lists wastes and nutrients incorrectly.

D. Carbon dioxide; nutrients: Carbon dioxide and other wastes pass from fetal to maternal blood, while nutrients pass from maternal to fetal blood.


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Correct Answer is B

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