FE FE Hemodynamics & Blood Flow

Question 1

Which vessel carries the most oxygenated blood from the placenta to the fetus?

Accepted Answer

Umbilical vein

Answer

Umbilical artery

Answer

Ductus venosus

Answer

Portal vein

Question 2

The ductus venosus shunts blood from the umbilical vein directly to which structure?

Accepted Answer

Inferior vena cava

Answer

Right atrium

Answer

Left atrium

Answer

Portal sinus

Question 3

In fetal circulation, the foramen ovale allows blood to shunt from which chamber to which chamber?

Accepted Answer

Right atrium to left atrium

Answer

Left atrium to right atrium

Answer

Right ventricle to left ventricle

Answer

Left ventricle to right ventricle

Question 4

Which fetal shunt connects the main pulmonary artery to the descending aorta?

Accepted Answer

Ductus arteriosus

Answer

Foramen ovale

Answer

Ductus venosus

Answer

Aortic isthmus

Question 5

What percentage of combined cardiac output does the right ventricle contribute in the normal fetus?

Accepted Answer

55%

Answer

30%

Answer

45%

Answer

70%

Question 6

In the normal fetus, pulmonary vascular resistance is:

Accepted Answer

Higher than systemic vascular resistance

Answer

Lower than systemic vascular resistance

Answer

Equal to systemic vascular resistance

Answer

Absent due to non-functional lungs