<prompt> Vein located in anterior interventricular sulcus -Great cardiac veinCoronary sinusMiddle cardiac veinSmall cardiac vein  <response>: Ans. is a i.e., Great cardiac vein Coronary Atrioventricular sulcusGreat cardiac vein, coronary sinus, Small cardiac vein, RCA, LCX.Anterior interventricular sulcusGreat cardiac vein, left anterior descending interventricular artery.Posterior interventricular sulcusMiddle cardiac vein, Posterior interventricular branch of RCA. 