Why does a mother's blood volume increase during pregnancy?
A) A mother's blood volume increases to keep up with her increase in tidal volume.
B) A mother's blood volume increases to accommodate for flow through the placenta.
C) A mother's blood volume increases to keep up with the increase in GFR.
D) A mother's blood volume increases to strengthen the immune system.
E) A mother's blood volume increases due to the weight of the fetus.
Answer: B
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