Which arteries blockage would lead to ischemia of the apex of the heart?

Anterior interventricular (descending)-anterior interventricular (descending) the anterior interventricular artery is a branch of the left coronary artery. it supplies both ventricles as well as the interventricular septum. it also reaches the apex, supplying that area as well. the left circumflex artery is the other major branch of the left coronary artery. it supplies the posterior surface of the left ventricle, but does not reach the apex of the heart. the right coronary artery has two major branches: the right marginal and the posterior interventricular artery. (the right coronary also gives off two smaller branches to the sa node and the av node.) the right marginal artery supplies the right ventricle, while the posterior iv artery supplies the interventricular septum and the two ventricles. neither of these arteries provides a major source of blood to the apex of the heart.