Coronary Arteries and Cardiac Veins: Variations Anatomy
Anterior
interventricular (left anterior descending) branch of left coronary artery
is very short. Apical part of anterior (sternocostal) surface is supplied by
branches from inferior interventricular (posterior descending) branch of right
coronary artery curving around apex.
Inferior interventricular (posterior descending) branch
is derived from circumflex branch of left coronary artery instead of from right
coronary artery.
Inferior interventricular (posterior descending) branch
is absent. Area is supplied chiefly by small branches from circumflex branch of
left coronary artery and from right coronary artery.
Inferior interventricular (posterior descending) branch is
absent. Area is supplied chiefly by elongated anterior interventricular (left anterior
descending) branch curving around apex.
