A 44-year-old member asked:
What is the function of fossa ovalis in embryonic human heart and why it becomes foramen ovale?
1 doctor answer • 3 doctors weighed in
Dr. Irv Lohanswered
Cardiology 43 years experience
No function in adult: This is the adult anatomic footprint of the normal path of oxygenated blood from the uterus to bypass the fetal lungs & provide oxygen to the fetus's body. This path is in the wall between the fetus's left & right atria. At birth, this hole immediately closes, putting baby blood in the lungs. In adults, this closure may not be complete (patent for amen ovale) & blood may shunt across the atria.
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5.7k viewsReviewed >2 years ago
Last updated Oct 4, 2016
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