14 氣管為一管狀器官，下列關於其敘述何者為錯？

氣管為可移動的器官，在進行手術時常須將頸部伸展（hyperextension）

喉返神經位於氣管和食道間的凹槽（tracheoesophageal groove）

無名動脈（innominate artery）位於左支氣管後方

氣管於Louis angle的高度分為左右支氣管

answer C

The brachiocephalic artery (or brachiocephalic trunk or innominate artery) is an artery of themediastinum that supplies blood to the right arm and the head and neck. this is on the right side!

braches arise from the aortic arch:

brachiocephalic / innominate, common carotid, left subclavian!