The major venous return of the hea, the coronary sinus, empties into: (A) IVC, (B) Left atrium, (C) Right atrium, (D) Right ventricle
Answer is C. The coronary sinus empties directly into the right atrium (like IVC, SVC) near the conjunction of the posterior interventricular sulcus and the coronary sulcus.Reference: Chaurasia; 6th edition