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A member asked:
What is the function of fossa ovalis in embryonic human heart and why it becomes foramen ovale?
A doctor has provided 1 answer
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.
Answered 10/4/2016
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