表面投影:自锁骨的胸骨端上缘(胸锁关节)处至乳突尖与下颌角连线的中点,上、下两点连线即为颈总动脉体表投影。Facial artery面动脉Inferior thyroid artery甲状腺下动脉Vertebral artery椎动脉Superior thyroid artery甲状腺上动脉Internal carotid artery颈内动脉Ascending pharyngeal artery咽升动脉External carotid artery颈外动脉Occipital artery枕动脉.向前(3 ......