首都医科大学学报 ›› 1987, Vol. 8 ›› Issue (3): 170-174.

• 论著 • 上一篇    下一篇

脊髓双投射神经元的形态学观察

杨存田1, 徐群渊1, 李楠1, 王海燕1, 蔡青1, 吕国蔚2, 何国瑞2   

  1. 1. 首都医学院解剖学教研室;2. 首都医学院针麻脑学研究室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1987-07-15 发布日期:1987-07-15

Morphological Observation on the Spinal Double Projection Neuron

Yang Cuntian1   

  1. Department of Anatomy
  • Received:1900-01-01 Revised:1900-01-01 Online:1987-07-15 Published:1987-07-15

摘要: 通过逆行刺激颈背侧索和背外侧索鉴定猫腰骶膨大部双投射神经元并用辣根过氧化物酶(HRP)进行细胞内染色。胞体、树突及其侧棘和该细胞的局部轴突侧支得到充分显示。胞体位于Ⅲ—Ⅴ板层内,所有树突几乎也都位于Ⅲ—Ⅴ板层。树突在吻尾、内外、背腹方向长度比为4.5:1:2.8。轴突在Ⅲ—Ⅴ板层内广泛分支并发出曲张样的终末支,轴突侧支分布在树突树所在范围内和它们的附近以及胞体的腹侧。应用2001型数字图象处理仪分析测量胞体和树突棘,胞体长径和宽径分别为58.52μm和51.04μm;树突侧棘的长、宽径分别为1.15~4.97μm(平均2.62μm)和0.78~3.27μm(平均1.93μm);长宽径比为1.51±0.26。树突棘茎长度为0.49~10.87μm(平均2.56μm)。

关键词: 脊髓, 双投射神经元, 树突, 轴突侧支, 树突棘

Abstract: The double projection neurons from cat's lumbosacral enlargment were identified by antidromic stimulation of both the cervical dorsal column and the dorsolateral column and stained intracellularlly with horseradish peroxidase.The cell body,dendritic arbors and their gemmules and the local laterals of the cell's axon were revealed completelly。The cell body and the gemmules dendrite were analysed and measured by the Pericolor 2001 type. The cell body was located in Laminae Ⅲ—Ⅴ.All the dendritic arbors situated nearly in Laminae Ⅲ—Ⅴ too.There is a ratio of 4.5 to 1 to 2.8 in rostrocaual,mediolaterel and dorsoventral length of the dendritic arbors.Axon collaterals arborized extensivly and issued varicositylike terminal branches in Laminae Ⅲ—Ⅴ,both within and beneath their dendritic territories and ventral to the cell body.The length and width of the the cell body are 58.25 and 51.04 um。The lenght and width of dendritic gemmules ranged from 1.15 um to 4.97 um(X=2.62um)and 0.78 um to 3.27um(X=1.93um)。Length-width ratio is 1.51±0.26.The length of pedicel of the gemmules ranged from 0.49-10.87um(X=2.56um).

Key words: spinal cord, double projectional neuron-dendritic arborn, axon collateral, dendritic gemmule