The Fossa Ovalis is a Thin Spot or Depression in the Interatrial

Question

The fossa ovalis is a thin spot or depression in the interatrial septum.

Accepted Answer

The fossa ovalis is indeed a thin, depression-like area in the interatrial septum of the heart, marking the site of the closed foramen ovale, which allowed blood flow between the right and left atria in fetal circulation.