The nurse teaching the expectant parents about the placenta also talks about the circulation and how the fetus gets its oxygen. She will include in this teaching which important fact?
1. The placenta functions as the lungs for the fetus.
2. The fetus obtains its oxygen from the amniotic fluid.
3. The fetus receives its oxygen by osmosis from the mother's bloodstream.
4. Fetal circulation delivers the highest amount of oxygen to the abdomen and lower body of the fetus.
1
Rationale 1: The placenta functions as the lungs for the fetus. Most of the blood supply bypasses the fetal lungs until baby takes its first breath.
Rationale 2: The fetus does not obtain its oxygen from the amniotic fluid.
Rationale 3: The fetus receives its oxygen from the mother by diffusion.
Rationale 4: The highest amount of circulation is to the head and upper body.
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