Tendon of Todaro connects:
Ans: (a) Coronary sinus to tricuspid valve annulusRef: Gray's Anatomy, The Anatomical Basis of Clinical Practice, Susan Standring, 41st edition, 2016, Page 1000 &1001The valve of coronary sinus (Thebesian valve) is connected to the central fibrous body (where the tricuspid valve annulus is attached) by tendon of Todaro.Tendon of Todaro is a palpable, round, collagenous bundle present beneath the endocardium (subendocardial).Triangle of Koch: Boundaries:Inferiorly - septal cusp of the tricuspid valve,Basally - anteromedial margin of ostium of the coronary sinus,Superiorly - tendon of Todaro.Triangle of Koch is the landmark of atrioventricular node and its atrial connections.
Coronary sinus to tricuspid valve annulus
Ridge of muscle connecting IVC and SVC
Valve in opening of IVC
Raised interatrial ridge
Thorax