Fossa ovale

Dr Craig Hacking et al.

The fossa ovale (or ovalis) is the small oval depression in the interatrial septum at the site of the closed foramen ovale, which closes once fetal circulation ceases in the first few minutes of postnatal life. It represents the overlapping primary and secondary septa of the interatrial septum. It has a semilunar depression inferiorly which is the floor of the fossa, and the adjacent ridge is at the superior margin of the fossa.

Related pathology

Thoracic anatomy
Share article

Article information

rID: 49891
Section: Anatomy
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.