ANATOMICAL VARIATIONS OF THE AORTIC VALVE: TRICUSPID.
The anterior (*) sinus gives the RCA. In more than the 60% of the hearts this sinus is wich has more surface of coaptation.
(*) Right (anterior) coronary sinus. 1) right coronary artery. C) conus branch. RV) right ventricle. PT) pulmonary trunk.

Image #48