成年男尸 ,在行局解其左侧椎动脉时 ,根据以往的知识 ,椎动脉起于锁骨下动脉且与胸廓内动脉起点大致相对的位置 ,于是在其左锁骨下动脉处寻找 ,未能发现。然后 ,在邻近的动脉根部寻找 ,结果在主动脉弓的上后方发现了左椎动脉的起点 ,该起点位于左颈总动脉与左锁骨下动脉之间 , Adult male corpse, in the bureau of the left vertebral artery, according to the previous knowledge, the vertebral artery in the subclavian artery and the starting point of the internal thoracic artery roughly opposite position, so looking in the left subclavian artery, failed to Find. Then, looking at the proximal root of the artery, the starting point of the left vertebral artery is found at the posterior superior aspect of the aortic arch, which is located between the left common carotid artery and the left subclavian artery,