摘要
我们用树鼩14只,取耳蜗铺片后进行毛细胞计数和长度测量。发现树鼩毛细胞数及缺失率与人、猴、豚鼠不同,树鼩毛细胞失数少且稳定,蜗尖弃用部少,不同种群间的个体差异小,利于用作生物学实验动物,可为研究耳的生理、病理及临床服务。
We observed the canalis cochlearis of 14 Tupaia belangeri chinensis(T.b.) which come from different populations, used the surface specimen technique counted the number of hair cell (HC) and measured the length of the canalis cochearis. Results are as follow, the canalis cochlearis is 13.41±0.48 mm lengths, have three and a half turns. The number of inner HC is 1455.64±50.07, 108.58±.81 per mm. The nature loss ratio is 0.10%. The number of outer HC is 5143.93±210.61, 383.56±7.02 per mm, the loss ratio is 0.53%, in the first row is 0.46%, second row is 0.42%, third row is 0.72%. Conclusion: 1. There are very different between T.b. and men, monkey, guinea-pig in the length of canalis cochlearis, the number of outer HC, inner HC and their nature loss ratios. 2. According to the lower nature loss ratios of HC and the discarded part of apical end is 0.2mm<0.5mm, the intraspecies differences is small. It is worth developing to a new kind of experimental animal for otic-physiology, pathology and clinical study.
关键词
树QU
耳蜗
毛细胞
Tupaia belangeri chinensis (tree shrew), Cochlearis, Hair cell
