part of part of attaches_to contributes to morphology of mitral valve mitral valve anulus anulus of mitral valve uberon mitral valvar anulus UBERON:0005995 mitral anulus The fibrous ring of the mitral valve that attaches the cusps of mitral valve to the heart, and which consists of portions of the fibrous scallops of the anterior and posterior cusps fibrous ring of mitral valve mitral annulus FMA:9498 mitral valve cusp fibrous ring of heart neural crest-derived structure