The fibrous ring of the tricuspid valve that attaches the cusps of tricuspid valve to the heart, and which consists of portions of the fibrous scallops of the anterior cusp (infundibular cusp), the posterior cusp (marginal cusp), and the septal cusp (medial cusp). [ MP:0010621 ]
Synonyms: anulus of tricuspid valve tricuspid anulus tricuspid valvar anulus fibrous ring of tricuspid valve