本实验采用ＨＲＰ逆行性追踪技术对６只家兔左侧闭孔神经的躯体传入和传出纤维来源及其节段性分布进行观察，结果显示同侧Ｌ６～７节段脊髓灰质腹角腹外侧部和相应的脊神经节内出现了较多的ＨＲＰ标记细胞，尤以Ｌ６较多，Ｌ７次之，同侧Ｌ６～７脊神经节中出现大量标记细胞，仅一只动物在Ｌ７脊神经节中出现少量ＨＲＰ阳性细胞，表明闭孔神经传入和传出纤维主要来源于下位腰髓腹角及相应的脊神经节，并呈现明显地节段性分布。 In this study, HRP retrograde tracing technique was used to observe the origin and distribution of somatic afferent fibers and their segmental distribution in the left obturator nerve of 6 rabbits. The results showed that the ipsilateral ventral horn of ventral gray matter There were more HRP labeled cells in the lateral part and the corresponding dorsal root ganglion, especially L6, L7 followed by a large number of labeled cells in the ipsilateral L6-7 spinal ganglia and only one animal appeared in L7 spinal ganglia A small amount of HRP-positive cells, indicating that the afferent and efferent fibers of the obturator nerve originate mainly from the ventral lower lobe and the corresponding spinal ganglia and show a distinct segmental distribution.