Tendon of Todaro connects
Tendon of Todaro is a pa of Koch's triangle Base: ostium of coronary sinus Superior boundary: tendon of Todaro connects central fibrous body. Inferior boundary: septal cusp of tricuspid value. Apex: bundle of his & AV node.
Coronary sinus to tricuspid valve annulus
Ridge of muscle connecting IVC and SVC
Valve in opening of IVC
Raised interatrial ridge
CVS Embryology