WorksheetsFetal Circulation Quiz
Total questions: 15
Worksheet time: 8mins
What is the function of the umbilical vein?
It carries oxygenated blood from the placenta to the fetus.
It carries deoxygenated blood from the fetus to the placenta.
It connects the fetus to the maternal blood supply.
It is responsible for nutrient absorption.
What is the role of the ductus venosus?
It allows blood to bypass the liver.
It connects the pulmonary artery to the aorta.
It carries blood from the placenta to the fetus.
It is responsible for oxygenating blood.
What happens to blood in the right atrium?
It mixes with oxygenated blood from the IVC.
It is pumped directly to the lungs.
It flows to the left atrium only.
It is filtered before entering the ventricle.
What is the significance of the ductus arteriosus?
It connects the pulmonary artery to the descending aorta.
It allows blood to flow from the left atrium to the right atrium.
It is a low-resistance channel for oxygenated blood.
It prevents blood from entering the lungs.
What happens to the pulmonary vascular resistance (PVR) during fetal life?
It decreases
It increases
It remains constant
It fluctuates
What is the role of surfactant in fetal lungs?
Facilitates gas exchange
Prevents lung collapse
Increases lung fluid
Decreases lung fluid
What occurs during the transition from fetal to newborn circulation after birth?
Umbilical cord is clamped
Ductus arteriosus opens
Foramen ovale opens
Ductus venosus remains open
What is the function of the ductus venosus?
To carry oxygenated blood
To close after birth
To allow blood to bypass the liver
To connect the aorta and pulmonary artery
What is the significance of the foramen ovale in fetal circulation?
Allows blood flow from right to left atrium
Closes immediately after birth
Increases pulmonary blood flow
Decreases systemic blood pressure
What happens to the ductus arteriosus after birth?
It remains open
It constricts
It enlarges
It becomes the ligamentum venosus
What is the role of the lungs in gas exchange after birth?
They become non-functional
They start intermittent breathing
They only secrete fluid
They decrease in size
What is the effect of increased arterial PO2 on the ductus arteriosus?
It causes dilation
It causes constriction
It has no effect
It causes it to remain open
What happens to the pulmonary vascular resistance during the initial breath at birth?
It increases
It decreases
It remains the same
What is the role of surfactant in the lungs?
Increases surface tension
Decreases surface tension
Has no effect
What is the effect of delayed cord clamping?
Increases placental transfusion
Decreases placental transfusion
No effect
