If the circumflex aery gives off the posterior interventricular aery, then the aerial supply is called

If the circumflex aery gives off the posterior interventricular aery, then the aerial supply is called left dominance. In 65% of the population, the posterior interventricular aery (PIVA) is a branch of right coronary aery and this is called the right dominance. In 10% of the population, PIVA is given by the circumflex aery (a branch of the left coronary aery) and this is called the left dominance. Ref: Gray&;s Anatomy 41st edition Pgno: 1019