Why Does Polycythemia Occur in a Fetus

question 17

Multiple Choice

Why does polycythemia occur in a fetus?

• A) Because fetal hemoglobin has a greater affinity for oxygen due to 2,3 diphosphoglycerate (2,3 DP)
• B) Because the fetus has a different hemoglobin structure of two- and two-chains rather than two- and two ß-chains
• C) Because there is increased erythropoiesis in response to the hypoxic intrauterine environment
• D) Because the lungs of the fetus are undeveloped and unable to adequately diffuse oxygen to the pulmonary capillaries

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Definitions:

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The pursuit of a goal or the addressing of a challenge by a group of individuals or organizations working together, often seen in social movements and collaborative projects.

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pertains to a problem or matter that is specific to a particular community or geographical area.

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A systematic process of envisioning a desired future and translating this vision into broadly defined goals and a sequence of steps to achieve them.

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Local or community-based groups that work from the bottom up to effect change on particular issues or policies.