Medical Definition of Annulus fibrosus

1. One of four fibrous rings that surround atrioventricular and arterial orifices of the heart, providing attachment for the valve leaflets and maintaining patency of the orifice. As part of the fibrous skeleton of the heart, the fibrous rings also provide origin and insertion for the myocardium. Synonym: annulus fibrosus cordis, annulus fibrosus, coronary tendon, fibrous ring, Lower's ring. (05 Mar 2000)

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Lexicographical Neighbors of Annulus Fibrosus

annuloplasty ring
annulospiral ending
annulospiral organ
annulus ciliaris
annulus conjunctivae
annulus femoralis
annulus fibrocartilagineus membranae tympani
annulus fibrosus (current term)
annulus fibrosus cordis
annulus fibrosus disci intervertebralis
annulus fibrosus of intervertebral disc
annulus haemorrhoidalis
annulus iridis
annulus iridis major
annulus iridis minor
annulus lymphaticus cardiae
annulus ovalis
annulus tendineus communis
annulus tympanicus

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