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Understanding Fetal Circulation Quiz

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1. What circulatory shortcut in the fetal heart directs blood from the right atrium to the left atrium?

2. Which fetal structure carries oxygenated blood from the placenta to the fetus?

3. What happens to the ductus arteriosus after birth?

4. The blood leaving the fetus via the umbilical arteries is:

5. Which fetal structure facilitates the direct flow of blood from the umbilical vein to the inferior vena cava?

6. Why does a fetus need the foramen ovale?

7. What change triggers the closure of the foramen ovale at birth?

8. What is the primary role of the placenta in fetal circulation?

9. What is the function of the ductus arteriosus during fetal development?

10. What happens to the umbilical vessels after birth?