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What is the path of blood in the fetal heart?

1 doctor weighed in
Dr. Lewis Hassell
Pathology

In brief: Fetal heart

Oxygenated blood from the placenta returns to the heart via the umbilical vein and IVC, entering the right atrium. Some passes directly to the left atrium through foramen ovale, some to right ventricle.
Most RV blood is ejected into systemic circulation via ductus arteriosis, but a small amount to fetal lungs. Left heart blood from atrium (foramen ovale and pulmonary veins) follows aorta to body

In brief: Fetal heart

Oxygenated blood from the placenta returns to the heart via the umbilical vein and IVC, entering the right atrium. Some passes directly to the left atrium through foramen ovale, some to right ventricle.
Most RV blood is ejected into systemic circulation via ductus arteriosis, but a small amount to fetal lungs. Left heart blood from atrium (foramen ovale and pulmonary veins) follows aorta to body
Dr. Lewis Hassell
Dr. Lewis Hassell
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