<prompt> All of the following are true about the root of right lung except?Azygous vein crosses anteriorly and superiorlyVagus crosses it anteriorlyPhrenic nerve crosses it anteriorlySVC is present anteriorly  <response>: Ans bi.e., Vagus crosses it anteriorlyRef: Snells 7the p. 94; BDC 4he Vol.l p. 224Vagus nerve crosses both hila posteriorly.Azygous vein arches the hilum of right lung azygous vein is superior to hilumPhrenic nerve on both sides and SVC on right side are anterior. 