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(right and left) fibrous rings of heart

 

Definition: two fibrous rings that surround atrioventricular orifices of the heart, providing attachment for the atrioventricular valve leaflets and maintaining patency of the orifices. As part of the fibrous skeleton of the heart, the fibrous rings also provide origin and insertion for the myocardium.

Synonym(s): anulus fibrosus1TA, anulus fibrosus dexter/sinister cordis, coronary tendon, fibrous ring1, Lower ring

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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