Methods:The lateral nasal wall was observed on 20 adult cadaveric specimens,and the ostium of frontal sinus and front mid ethmoid sinus was observed too.

• 方法:在20具40侧经防腐处理的完整成人尸头标本上观测筛泡气化发育的情况；观察额窦及前中筛气房窦口引流情况。结果:额窦向中鼻道引流占87.；5%25(35侧);向筛漏斗引流占10