Neonatal Circulatory System Changes Quiz
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Questions and Answers

What is the main function of the umbilical arteries in fetal circulation?

  • Send waste products and carbon dioxide to the mother's circulation
  • Bypass the lungs through the foremen ovale
  • Transport oxygenated blood to the fetal heart
  • Return oxygen-depleted blood to the placenta (correct)
  • Which shunt in fetal circulation bypasses the lungs and shunts highly oxygenated blood from the right atrium to the left atrium?

  • Ductus Venosus
  • Ductus Arteriosus
  • Foremen Ovale (correct)
  • Umbilical Arteries
  • What is the function of the Ductus Arteriosus in fetal circulation?

  • Move blood from the pulmonary artery to the aorta (correct)
  • Carry mostly high oxygenated blood
  • Protect the lungs against circulatory overload
  • Allow the right ventricle to strengthen
  • Which vessel in fetal circulation carries mostly highly oxygenated blood and bypasses the liver?

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

    What triggers induce the structural changes in fetal circulation?

    <p>Cessation of placental blood flow</p> Signup and view all the answers

    Where does the umbilical cord vein transport blood in fetal circulation?

    <p>Fetal heart</p> Signup and view all the answers

    What structure remains open for some time after birth allowing final volume of blood to flow from the placenta into the infant prior to occlusion?

    <p>Umbilical veins</p> Signup and view all the answers

    Which hormone activates the sodium pump that clears fetal lung fluid at birth?

    <p>Cortisol</p> Signup and view all the answers

    During which month does fetal development occur?

    <p>Ninth month</p> Signup and view all the answers

    What is the function of the placenta?

    <p>Filtering germs that cause infection</p> Signup and view all the answers

    Which type of immunoglobulin is present in the blood and can cross the placenta?

    <p>IgG</p> Signup and view all the answers

    What initiates the opening of the pulmonary circulation at birth?

    <p>Initiation of respiration</p> Signup and view all the answers

    What occurs as a result of the closure of ductus venosus, arteriosus, and foramen ovale?

    <p>Change of fetal circulation to newborn circulation</p> Signup and view all the answers

    What is responsible for increasing glucose and fatty acids and blunting blood pressure at birth?

    <p>Catecholamines release</p> Signup and view all the answers

    What substance covers the wrinkled skin of a developing fetus?

    <p>'Vernix Caseosa'</p> Signup and view all the answers

    What is the main function of the umbilical arteries in fetal circulation?

    <p>Returning oxygen-depleted blood to the placenta</p> Signup and view all the answers

    What is the main function of the Ductus Arteriosus in fetal circulation?

    <p>Moving blood from the pulmonary artery to the aorta</p> Signup and view all the answers

    Where does the umbilical cord vein transport blood in fetal circulation?

    <p>To the inferior vena cava and then to the right atrium</p> Signup and view all the answers

    What occurs as a result of the closure of ductus venosus, arteriosus, and foramen ovale?

    <p>Strengthening of the right ventricle</p> Signup and view all the answers

    What structure remains open for some time after birth allowing final volume of blood to flow from the placenta into the infant prior to occlusion?

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

    Which shunt in fetal circulation bypasses the liver and shunts highly oxygenated blood from the right atrium to the left atrium?

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

    What is the function of vernix caseosa in fetal development?

    <p>Regulates the fetus body temperature</p> Signup and view all the answers

    What occurs as a result of the release of catecholamines (norepinephrine, epinephrine, and dopamine) at birth?

    <p>Increased blood pressure</p> Signup and view all the answers

    Which vessel in fetal circulation carries blood and oxygen away from the placenta to the fetus?

    <p>Umbilical veins</p> Signup and view all the answers

    What is the main function of the Ductus Arteriosus in fetal circulation?

    <p>Carries mostly highly oxygenated blood and bypasses the liver</p> Signup and view all the answers

    Where does the exchange of gases and nutrients between maternal and fetal blood take place?

    <p>Placenta</p> Signup and view all the answers

    What triggers induce the structural changes in fetal circulation?

    <p>Initiation of respiration</p> Signup and view all the answers

    During which month does head growth begin to slow and the body increases in length in fetal development?

    <p>Third month</p> Signup and view all the answers

    What is responsible for increasing glucose and fatty acids and blunting blood pressure at birth?

    <p>Catecholamines release (norepinephrine, epinephrine,and dopamine)</p> Signup and view all the answers

    What is the main function of the umbilical arteries in fetal circulation?

    <p>Discontinuation of Blood flow causing occlusion of umbilical arteries</p> Signup and view all the answers

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