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Fetal Neonatal Transition and Placental Circulation Quiz
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Fetal Neonatal Transition and Placental Circulation Quiz

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@StimulatingTropicalRainforest

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Questions and Answers

What is the percentage of left ventricular output that flows into the descending aorta in a fetus?

  • 25% (correct)
  • 10%
  • 33%
  • 65%
  • During fetal hypoxia, what is responsible for the increase in heart rate?

  • Decreased vagal stimulation
  • Increased drive (correct)
  • Transiently decreased heart rate
  • Chronic hypoxia
  • Which factor contributes to an increase in stroke volume during gestation?

  • Decreased preload
  • Decrease in ventricular size
  • Increased contractility (correct)
  • Increased afterload
  • What is the primary mechanism for decreasing pulmonary vascular resistance at birth?

    <p>Effect of ventilation</p> Signup and view all the answers

    After birth, what leads to the reversal of the pulmonary systemic pressure gradient?

    <p>Clamping the umbilical cord</p> Signup and view all the answers

    What leads to the closure of the ductus arteriosus after birth?

    <p>Oxygen content</p> Signup and view all the answers

    Which shunt undergoes functional closure within minutes after birth?

    <p>Ductus venosus</p> Signup and view all the answers

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