【多选题】【消耗次数：1】
主动脉弓的分支有().
①
A.左颈总动脉
②
B.右颈总动脉
③
C.头臂干
④
D.左锁骨下动脉
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关于颈总动脉的描述，正确的是
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在甲状软骨上缘高度分出颈内动脉和颈外动脉
②
右侧颈总动脉起自升主动脉
③
左侧颈总动脉起自头臂干
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走行于气管和喉的后方
⑤
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①
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②
可导致同侧脑循环障碍
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可导致同侧偏瘫
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死亡率近50％
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