斯氏狸殖吸虫体壁神经细胞与神经纤维的观察

目的　探讨斯氏狸殖吸虫的体壁神经细胞和神经纤维的分布特点和相互间关系。方法　采用乙酰胆碱酯酶定位技术对斯氏狸殖吸虫的神经细胞和神经纤维进行显示。结果　斯氏狸殖吸虫前部体壁内神经纤维密集 ,以纵行神经纤维为主 ,虫体中部以相互交叉的斜行神经纤维为主。斯氏狸殖吸虫有两类神经细胞 ,即双极和多极神经细胞 ;虫体前部的纵行神经纤维上以多极神经细胞分布较多 ,中部较少 ,后部最少。双级神经细胞分布于神经节内、神经干内过神经干旁。在虫体的横截面上 ,神经细胞位于神经纤维下。结论　斯氏狸殖吸虫的前部体壁神经纤维密集 ,多极神经细胞较多 ,可能与虫体前部肌活动能力强有密切关系。

Observation on the distribution of tegument nerve cells and nerve fibers in Pagumogonimus skrjabini

Aim To explore the distribution and relationship of nerve cells and nerve fibers in P skrjabini Methods The nerve cells and nerve fibers of P skrjabini were revealed using localization method of acetylcholinesterase Results The nerve fibers in the anterior body of P skrjabini were dense They were mainly longitudinal nerve fibers In the middle body of P skrjabini,the right and left diagonal nerve cells and longitudinal nerve fibers could be easily observed They weaved each other forming nerve network below the tegument There were two kind of nerve cells,bipolar and multipolar nerve cells in the body wall The bipolar nerve cells were be found in or near the nerve trunk,nerve ganglia The multipolar nerve cells usually sent out 8～12 dentrites that connecting with longitudinal nerve fibers The multipolar nerve cells mainly distributed in the anterior body of P skrjabini The multipolar nerve cells can be seen under the nerve fibers in the transverse section of P skrjabini Conclusion Abundant nerve cells and nerve fibers are associated with the stronger muscular movement of anterior body of P skrjabini