Conclusion: the origin and intraorbital course of the ethmoidal artery is variable, which is more common in the posterior ethmoidal artery than in the anteriorethmoidalarteries.
结论：筛动脉的起始及眶内走行多变异，筛后动脉变异较筛前动脉多见。
2
Results: Ethmoidal crest was located infra-anterior to the sphenopalatine foramen and anterior to the lateral posterior nasal arteries.
结果：筛骨嵴位于蝶腭孔的前下方，蝶腭动脉分出的鼻后外侧动脉的前方。
3
Results:Besides the branches of anteriorethmoidal artery and dorsal nasal branches of ophthalmic artery, the primary blood supply to the nose was derived from the lateral nasal arteries.