right coronary artery interventricular septum Posterior interventricular branch of right coronary artery 3840 Posterior descending coronary artery Ramus interventricularis posterior (Arteria coronaria dextra) Posterior descending branch of right coronary artery FMA:3840 Right posterior interventricular artery fma:fma3840 Posterior interventricular branch of right coronary artery posterior descending artery AS Posterior descending artery Branch of right coronary artery which runs along the upper third of the posterior interventricular sulcus to supply the posterior wall of right and left ventricles and the posterior third of the interventricular septum. PDA Branch of right coronary artery