Kruger L, Kumazawa T, Mizumura K, Sato J, Yeh Y
Department of Anatomy, UCLA Center for the Health Sciences 90024.
Somatosens Res. 1988;5(4):373-80. doi: 10.3109/07367228809144637.
The sparse distribution of thin, principally unmyelinated sensory axons confined largely to the planar tunica vasculosa of the testis provides a suitable model for examining the fine structure of electrophysiologically characterized nerve fiber terminals. The marked sites of polymodal receptors of canine testis using the in vitro preparation devised by Kumazawa et al. (1987) were examined in serial sections traced to the terminal with the electron microscope, revealing the first micrographs of a characterized polymodal receptor ending. The inferred role of these terminals in nociception, their organelle content, and the problems encountered in interpreting our initial findings are considered in the context of the variety of morphological patterns and functional roles of thin sensory axons.
主要为无髓鞘的细感觉轴突稀疏分布，且大多局限于睾丸的平面血管膜，这为研究经电生理特征鉴定的神经纤维终末的精细结构提供了一个合适的模型。利用熊泽等人（1987年）设计的体外制备方法，对犬睾丸多模式感受器的显著部位进行了研究，通过电子显微镜对追踪至终末的连续切片进行观察，首次获得了经特征鉴定的多模式感受器终末的显微照片。结合细感觉轴突的各种形态模式和功能作用，探讨了这些终末在伤害感受中的推测作用、它们的细胞器含量以及解释我们初步发现时遇到的问题。
