#1
Which blood vessel carries oxygenated blood from the placenta to the fetus?
Umbilical vein
ExplanationOxygenated blood transport from placenta to fetus.
#2
During fetal development, what is the role of the umbilical vein?
Carrying oxygenated blood from the placenta to the fetus
ExplanationFetal placental oxygenated blood transport.
#3
Which structure connects the umbilical artery to the fetal descending aorta, allowing deoxygenated blood to bypass the fetal liver?
Ductus arteriosus
ExplanationUmbilical artery to aorta bypassing fetal liver.
#4
Which vessel carries deoxygenated blood from the fetus to the placenta?
Umbilical artery
ExplanationFetus to placenta deoxygenated blood flow.
#5
Which structure connects the fetal pulmonary trunk to the aorta, bypassing the lungs?
Ductus arteriosus
ExplanationPulmonary trunk to aorta bypass.
#6
What is the main function of the foramen ovale in fetal circulation?
To shunt blood from the right atrium to the left atrium
ExplanationRight to left atrial blood shunting.
#7
Which fetal blood vessel connects the pulmonary artery to the aorta, bypassing the lungs?
Ductus arteriosus
ExplanationPulmonary artery to aorta bypass.
#8
Which fetal shunt connects the right ventricle to the aorta, bypassing the lungs?
Ductus arteriosus
ExplanationRight ventricle to aorta bypass.
#9
What is the function of the ductus venosus in fetal circulation?
To shunt blood from the umbilical vein to the inferior vena cava
ExplanationUmbilical vein to inferior vena cava blood shunting.
#10
What is the main function of the ductus arteriosus in fetal circulation?
To shunt blood from the pulmonary artery to the aorta
ExplanationPulmonary artery to aorta blood shunting.
#11
During fetal circulation, which vessel carries oxygenated blood to the inferior vena cava?
Umbilical vein
ExplanationInferior vena cava oxygenated blood transport.
#12
What causes the closure of the ductus arteriosus after birth?
Decreased prostaglandin levels
ExplanationClosure due to decreased prostaglandins.
#13
Which structure connects the fetal umbilical vein to the inferior vena cava, allowing oxygenated blood to bypass the liver?
Ductus venosus
ExplanationBypassing liver via umbilical vein connection.
#14
Which fetal blood vessel carries deoxygenated blood from the fetus to the placenta?
Umbilical artery
ExplanationFetal placental deoxygenated blood transport.
#15
What triggers the closure of the foramen ovale after birth?
Increase in atrial pressure in the left atrium
ExplanationClosure due to increased left atrial pressure.
#16
What stimulates the closure of the ductus venosus after birth?
Decreased prostaglandin levels
ExplanationClosure due to decreased prostaglandins.
#17
Which structure serves as a communication between the pulmonary trunk and the aorta in fetal circulation?
Ductus arteriosus
ExplanationPulmonary trunk to aorta communication.