FMA definition : Left fibrous ring of heart which consists of the anterior, right posterior and left
posterior semilunar fibrous scallops of the aortic valve anulus that attaches the
cusp of aortic valve to the wall of heart.;
Left fibrous ring of heart which consists of the anterior, right posterior and left
posterior semilunar fibrous scallops of the aortic valve anulus that attaches the
cusp of aortic valve to the wall of heart.