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.
出处
《中华耳科学杂志》
CSCD
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)
关键词
外毛细胞
静纤毛
耳蜗
回声定位
蝙蝠
Outer hair cells
Stereocilia
Cochlea
Echolocation
Bat
