Results Outer and inner hair cells of the organ of Cord in adult and fetal appear regular arrangement in basal turn, and irregular arrangement in one row of inner hair cells and three rows of outer hair cells in middle and apical turn.

• 结果成人和胎儿Corti’s器基底圈内、外毛细胞排列规则,中圈和顶圈毛细胞排列不规则,内毛细胞以一排,外毛细胞以三排排列。