Hoyes A D, Barber P
J Anat. 1981 May;132(Pt 3):331-9.
The fine structure and distribution of the axons in the epithelium of the left and right sides of the trachea were studied in control rats and in rats subjected to unilateral cervical vagotomy. In control rats, the axons possessed similar ultrastructural features to the vesicle-containing axons which have been identified in the cornea and in the submucous plexus of the ureter. Stereological analysis showed that there are considerable differences in the degree of orientation of the axons and in the density of the intra-epithelial plexus on the two sides of the trachea. Degenerating axons were most numerous in the epithelium one day after vagotomy and degeneration and elimination of the axons by phagocytosis by the epithelial cells was completed within three days of section of the nerve. Comparison of the figures for the numbers of axons/grid hole obtained from specimens taken three days after vagotomy with those obtained from control specimens indicated that almost all the axons are derived directly from the vagus and that, although the majority of the axons in the epithelium on one side of the trachea are derived from the ipsilateral nerve, approximately one fifth are derived from the nerve on the contralateral side.
在对照大鼠和接受单侧颈迷走神经切断术的大鼠中，研究了气管左右两侧上皮中轴突的精细结构和分布。在对照大鼠中，轴突具有与已在角膜和输尿管黏膜下丛中鉴定出的含囊泡轴突相似的超微结构特征。体视学分析表明，气管两侧轴突的定向程度和上皮内神经丛的密度存在显著差异。迷走神经切断术后一天，上皮中变性轴突最多，神经切断后三天内，轴突通过上皮细胞吞噬作用发生变性并被清除。将迷走神经切断术后三天获取的标本中每网格孔轴突数量的数据与对照标本的数据进行比较表明，几乎所有轴突都直接来自迷走神经，并且，尽管气管一侧上皮中的大多数轴突来自同侧神经，但约五分之一来自对侧神经。
