BASILAR-MEMBRANE OF BAT, PTERONOTUS-P-PARNELLII
BASILAR-MEMBRANE OF BAT, PTERONOTUS-P-PARNELLII
复制标题
DOI：
10.1002/aja.1001530109
复制
发表时间：
1978-01-01
影响因子：
--
通讯作者：
HENSON, MM
中科院分区：
文献类型：
--
作者：
HENSON, MM
用光学显微镜和扫描电子显微镜对帕纳利蝙蝠的基底膜进行了研究，以探讨膜结构与这种蝙蝠听觉灵敏度的关系。基底膜与其他哺乳动物和其他蝙蝠的基底膜不同，除了末端之外，基底膜的宽度几乎没有变化。翼蝠的梳状部和覆盖部的增厚发育良好;它们的尺寸没有突然的变化，这一点与欧洲马蹄蝠的增厚不同，欧洲马蹄蝠敏锐的听觉似乎至少部分依赖于基底膜结构的突然、显著变化。在Pteronotus中，基底膜的大部分，7.5 mm或约58%，位于巨大的基底转弯内，在这个转弯内有陡峭的倾斜曲线和一个小的0.5 mm区域，膜是直的。直的部分与耳蜗的区域相关，在该区域中神经纤维的密度存在显著变化，并且耳的血管纹、螺旋韧带和充满液体的空间扩大。
The basilar membrane of P. p. parnellii was studied by light and scanning electron microscopy in order to examine the relationship of membrane structure to the sharply tuned sense of hearing in this bat. The basilar membrane was found to differ from those of other mammals and other bats by showing virtually no change in width except at the extreme ends. Thickenings of the pars pectinata and pars tecta are well developed in Pteronotus; they show no sudden changes in their dimensions and in this way differ from the thickenings found in the European horseshoe bat whose sharply tuned sense of hearing seems at least partially dependent on sudden, marked changes in the structure of the basilar membrane. In Pteronotus the greater part of the basilar membrane, 7.5 mm or approximately 58%, lies within the enormous basal turn and within this turn there are steeply banked curves and one small 0.5-mm region where the membrane is straight. The straight portion is associated with a region of the cochlea where there is a marked change in the density of nerve fibers and where the stria vascularis, spiral ligament and fluid-filled spaces of the ear are enlarged.