大鼠桡神经感觉纤维在脊髓胶状质的纵横定位研究

The orientational projection of sensory fibres of radial nerve to the substantia gelationsa of the spinal cord in rats

目的 研究大鼠桡神经感觉纤维在脊髓胶状质的定位投射。方法 按照跨神经节溃变原理 ,采用酸性磷酸酶(ACP)法在 10只切断桡神经的昆明大鼠观察桡神经感觉纤维在颈髓 5～ 8和胸髓 1上、中、下段胶状质内ACP的变化。结果 大鼠桡神经感觉纤维纵向投射 ,主要至脊髓C6上段至T1中段胶状质。其横向投射 ,桡神经主要位于整个胶状质的中 1/ 3区域。结论 桡神经投射区居外 。

Objective To study the orientational projection of sensory ribres of fadial nerves to the substantia gelationsa(SG) of the spinal cord in rats Method The model with transganglionic degeneration was established and then observed by acid phosphatase technique Results It was found that the sensory fibres of the radial nerves in rats chiefly projected to SG from the upper part of C 6 to the middle part of T 1 in the spinal cord longitudinally In their transvers projections, the afferent fibres of the radial nerves were mainly found in the region of the whole area of the middle 1/3 of SG Conclusion Radial nerves project to the lateral region and ulnar nerves to the medial region of SG