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颈部血管解剖变异中,颈总动脉、颈内动脉、颈外动脉发出位置的变异及分支血管发出位置、分支多少的变异较多,可是颈外动脉缺
Anatomical variation of the neck, the common carotid artery, internal carotid artery, external carotid artery and vascular branches of the location of the issue of the location of branches more variation in the number, but lack of external carotid artery