MCQ MAHE 2000 Physiology Answer 8
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Fetuses do not breathe; they obtain oxygen from their mothers. In the body of the mother oxygen is carried in the bloodstream, attached to the hemoglobin in the mother's red blood cells.
The maximum rate of oxygen diffusion through the placenta is directly proportional to the surface area of the placenta, inversely proportional to its thickness, and directly proportional to the difference between the partial pressure of oxygen in the mother's bloodstream and its partial pressure in the fetus's bloodstream.
Fetal Hemoglobin results in oxygen binding Hb even at a low PO2 therefore more oxygen can be transported at the low PO2.
Tags: MCQ, MAHE, Physiology, Fetal Oxygenation
Category: MAHE 2000 MCQs
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