Holland G R, Robinson P P
Department of Restorative Dentistry, University of Alberta, Edmonton, Canada.
J Dent Res. 1992 Aug;71(8):1468-72. doi: 10.1177/00220345920710080201.
The lingual and chorda tympani nerves from five cats were examined so that normal axonal populations could be determined. After perfusion fixation, the chorda tympani and lingual nerves were removed and processed, and sections were taken from individual and combined nerves for both light and electron microscopy. The chorda tympani remained as a distinct group of smaller axons for at least 4 mm distal to its junction with the lingual nerve. The mean number +/- S.D. of myelinated axons in the chorda tympani central to the junction was 1322 (+/- 268) and in the lingual nerve central to the junction, 3227 (+/- 510). The counts were not significantly different distal to the junction, and there were no side-to-side differences. Mean myelinated axon circumferences were significantly smaller in the chorda tympani (12.86 +/- 0.87) than in the lingual nerve (22.79 +/- 1.99; p less than 0.01). The mean size of axons in the chorda tympani was slightly but consistently larger on the left (13.1 +/- 0.73) than on the right side (12.61 +/- 1.01; p less than 0.05). Distal to the junction, the average proportion of non-myelinated axons was 44% in both chorda tympani and lingual nerves.
对五只猫的舌神经和鼓索神经进行了检查，以便确定正常的轴突群体。灌注固定后，取出鼓索神经和舌神经并进行处理，从单独的神经和联合神经中取材制作切片，用于光学显微镜和电子显微镜观察。鼓索神经在与舌神经交界处远端至少4毫米的范围内，仍为一组明显较细的轴突。交界处近端鼓索神经中髓鞘化轴突的平均数量±标准差为1322（±268），交界处近端舌神经中为3227（±510）。交界处远端的计数无显著差异，左右两侧也无差异。鼓索神经中髓鞘化轴突的平均周长（12.86±0.87）明显小于舌神经（22.79±1.99；p＜0.01）。鼓索神经中轴突的平均大小在左侧（13.1±0.73）略大于右侧（12.61±1.01；p＜0.05），且较为一致。在交界处远端，鼓索神经和舌神经中非髓鞘化轴突的平均比例均为44%。
