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Medical Definition of Vieussens' annulus
1. A muscular ring surrounding the fossa ovalis in the wall of the right atrium of the heart. Synonym: annulus ovalis, margin of fossa ovalis, Vieussens' annulus, Vieussens' isthmus, Vieussens' limbus, Vieussens' ring. (05 Mar 2000)
Lexicographical Neighbors of Vieussens' Annulus
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