This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax- wall and Bronchopulmonary segment, Subject name: Anatomy
The last tributary of the azygos vein is: 
Select and explain. 
A. Right superior intercostal vein, B. Hemi-azygos vein, C. Right bronchial vein, D. Accessory azygos vein
C: Right bronchial vein
Answer: C: Right bronchial vein 
Explanation: All of the above are the tributaries of Azygos vein. Right bronchial vein opens into the Azygos vein near its termination into SVC. Fig:- Venous drainage