noun
foramen ovale; oval opening in the fetal heart
Anatomical term for the opening between the atria in the fetal heart, which normally closes after birth.
胎児の心臓では、卵円孔を通じて血液が右心房から左心房へ流れる。
In the fetal heart, blood flows from the right atrium to the left atrium through the foramen ovale.