An anatomical space in the fetal heart that allows blood to enter the left atrium from the right atrium. [ ]

Synonyms: ostium secundum of Born falx septi Bottalo's foramen foramen ovale cordis

This is just here as a test because I lose it

Term information


It is one of two fetal cardiac shunts, the other being the ductus arteriosus (which allows blood that still escapes to the right ventricle to bypass the pulmonary circulation). Another similar adaptation in the fetus is the ductus venosus[WP]

development notes

In most individuals, the foramen ovale closes at birth. It later forms the fossa ovalis

has narrow synonym

foramen ovale