Fetal Circulation

In an adult, blood flows from the right atrium to the right ventricle then out to the

• body
• brain
• lungs
• liver

In a fetus, the lungs are nonfunctional and can be

• bypassed.
• utilized.
• inflated.

This is the opening in the fetal heart that allows blood to move directly from the right to the left atrium.

• foramen ovale
• umbilical artery
• umbilical vein
• pulmonary bypass

The fetus receives all of its oxygen and nutrients from the mother through the 

• umbilical vein.
• umbilical artery.
• foramen ovale.
• pulmonary vein.

Carbon dioxide and other wastes are passed from the fetus to the mother through the 

• umbilical artery
• umbilical vein
• foramen ovale
• pulmonary artery

The concentration of hemoglobin in the fetal blood is about ______% greater than in maternal blood.

• 50
• 100
• 25
• 35