This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Right and left crus of diaphragm forms aoic hiatus. Which of the following structures are transmitted through the aoic hiatus? \nSelect and explain. \nA. Left gastric vein and thoracic duct, B. Thoracic duct and hemiazygos vein, C. Azygos vein and thoracic duct, D. Left vagus and thoracic duct', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The aoic hiatus is the opening posterior in the diaphragm for the descending aoa. It also transmits the thoracic duct and azygos vein and sometimes the hemiazygos vein.', 'role': 'assistant'}]