蝙蝠耳蜗Corti器的电子显微镜观察  

The specialized features of outer hair cells of the bat cochlea

作　　者：闫利英[1] 李胜利[2] 李白芽[2] 张少强[1] 刘思伟[1] 朱宏亮[2] 郑庆印[2] 

机构地区：[1]西安交通大学医学院第一附属医院耳鼻咽喉-头颈外科,西安710061 [2]西安交通大学医学院神经科学研究中心

出　　处：《中华耳科学杂志》2007年第2期202-206,共5页Chinese Journal of Otology

基　　金：国家自然科学基金资助项目(编号:39970785);主任基金项目(30440080)

摘　　要：目的研究蝙蝠耳蜗基底膜毛细胞及静纤毛的特化现象。方法扫描电镜和透射电镜观察三种蝙蝠耳蜗毛细胞及静纤毛的表面亚显微结构形态。结果外毛细胞静纤毛特别的短,外毛细胞体呈瓶状或哑铃状,外毛细胞体被Deiters细胞的杯状膜包裹。结论我们观察到三种蝙蝠耳蜗外毛细胞体基本呈烧瓶状和哑铃状,明显有别于其他哺乳类耳蜗外毛细胞呈圆柱型的形态。这种毛细胞体的独特形态,可能是蝙蝠为适应高频回声定位的需要出现的特化现象。Objective To investigate the specialized features of the bat＇s outer hair cells （OHC） and stereocilia. Methods The bat cochlear hair cells were observed by the scanning and transmission electron microscope. Results The stereocilia bundles of OHC are extremely short. The OHC body exhibits a flask- or dumbbell-shape in the basal turn of the cochlea and are held in the cup formation of the deiters cell. Conclusion The specialized aspects of the cochlear outer hair cells and their stereocilia in the basal turn may represent adaptations for ultra-high frequency echolocation.

关 键 词：外毛细胞 静纤毛 耳蜗 回声定位 蝙蝠 

分 类 号：R322.923[医药卫生—人体解剖和组织胚胎学]