<prompt> Which among the following is the last tributary of the azygos vein?Right-superior intercostal veinHemi-azygos veinRight bronchial veinAccessory azygos vein  <response>: Azygos vein receives venous drainage from the right bronchial vein near its termination. Tributaries of the azygos vein include: The right superior intercostal vein a single vessel formed by the second, third, and fouh intercostal veinsFifth to eleventh right posterior intercostal veinsThe hemiazygos veinThe accessory hemiazygos veinEsophageal veinsMediastinal veinsPericardial veinsRight bronchial veinsRef: Grays Basic Anatomy By Richard Drake, A. Wayne Vogl, Adam W. M. Mitchell, 2012, Page 127. 