Blood supply of ventral 2/3rd of interventricular septum of hea is
The posterior interventricular aery, a branch of right coronary aery, supplies the posterior 1/3 of the interventricular septum. The remaining anterior 2/3 is supplied by the anterior interventricular aery which is a septal branch of the left anterior descending aery, which is a branch of left coronary aery . B D CHAURASIA'S HUMAN ANATOMY UPPER LIMB THORAX-VOLUME-1 SIXTH EDITION Page-265
Right coronary aery
Left coronary aery
Posterior interventricular aery
Marginal aery
Thorax