Corti器外隧道的构成文献从未报道过 ,过去一向认为外隧道的外壁是由 Hensen细胞所构成 ,通过扫描电镜系统观察 ,发现并非如此 ,现将观察结果报道如下。材料和方法取耳廓反射灵敏的健康豚鼠 6只。快速断头处死 ,取出双侧颞骨 ,挑破圆窗膜 ,取出镫骨 ,打开卵圆窗 ,用针在耳蜗尖 The composition of the Corti external tunnel has never been reported before. In the past, it was thought that the outer wall of the external tunnel was composed of Hensen cells. Observation by scanning electron microscopy showed that this was not the case. The observations are reported below. Materials and Methods 6 healthy guinea pigs with sensitive ear reflex were taken. Rapid decapitation executed, remove the bilateral temporal bone, piercing the round window membrane, remove the stapes, open the oval window, with the tip of the cochlea