Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?
A) She has trouble breathing due to the expanding uterus.
B) The fetus is removing carbon dioxide from her blood.
C) The maternal oxygen levels are also falling.
D) This creates a favorable concentration gradient between the fetal and maternal blood.
E) The bronchial tubes relax.

Question

Quizplus · Accepted Answer

A favorable concentration gradient allows carbon dioxide to flow from the fetal blood into the maternal blood at the placenta.

Why Would You Predict That the Blood Carbon Dioxide Levels