Limbus of fossa ovalis

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Limbus of fossa ovalis
Interior of right side of heart. (Limbus fossae ovalis labeled at left, fourth from top.)
Latin limbus fossae ovalis
Gray's p.531
Anatomical terminology

The limbus of fossa ovalis (anulus ovalis) is the prominent oval margin of the fossa ovalis. It is in the right atrium.

It is most distinct above and at the sides of the fossa; below, it is deficient.

A small slit-like valvular opening is occasionally found, at the upper margin of the fossa, leading upward beneath the limbus, into the left atrium; it is the remains of the fetal aperture (foramen ovale) between the two atria.

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.