Limbus of fossa ovalis
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| Limbus of fossa ovalis | |
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| Interior of right side of heart. (Limbus fossae ovalis labeled at left, fourth from top.) | |
| Latin | limbus fossae ovalis |
| Gray's | subject #138 531 |
| Dorlands/Elsevier | l_10/12494149 |
The limbus of fossa ovalis (annulus ovalis) is the prominent oval margin of the fossa ovalis.
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 between the two atria.
[edit] External links
- GPnotebook 637927483
- Dictionary at eMedicine limbus+fossae+ovalis
- Atlas of anatomy at UMich ht_rt_atrium - "Right atrium, internal structure, anterior view"
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