What is the role of placental barrier?

Prevents mix of fetal blood and nutrients

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Prevents mix of fetal blood and mother's blood

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Prevents mix of fetal blood and waste materials

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Prevents mix of fetal blood and chemicals

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Solution

The correct option is B
Prevents mix of fetal blood and mother's blood

The placental barrier is composed of structures that separate the maternal and the fetal blood. The placenta is composed of several layers of cells acting as a barrier for the diffusion of substances between the maternal and fetal circulatory systems.

The makeup of the placental barrier changes over the course of the pregnancy.

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