Structure passing through the opening marked 3 in the diaphragm is: (A) Oesophagus, (B) Left gastric nerve, (C) Right phrenic nerve, (D) Hemiazygos vein
Answer is C. Caval opening T8- The caval opening passes through the central tendon of the diaphragm. It contains the inferior vena cava and the right phrenic nerve. Ref anatomy B. D. Chourasia thorax p54