日本三角涡虫神经系统的组织学观察  

Histological Observation on the Nervous System of Dugesia japonica

作　　者：薛德明[1] 陈广文[1] 范念斯[1] 李鹏声[1] 石长应[1] 孙晓娟[1] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453007

出　　处：《四川动物》2011年第5期756-758,I0002,共4页Sichuan Journal of Zoology

基　　金：国家自然科学基金(No.30170119;30670247;30870368);教育部博士点基金(200804760003);河南省杰出青年科学基金(No.0312001100);河南省高等学校创新人才培养工程基金(豫教高[2005]126号)资助

摘　　要：为了给涡虫神经生物学的比较研究提供基础资料和通过RNAi技术为研究与脑部再生有关基因的功能奠定基础,本研究使用石蜡连续切片技术,经HE和Masson染色后,对日本三角涡虫Dugesia japonica的神经系统进行观察。日本三角涡虫的中枢神经系统由脑和2条纵神经索组成,脑呈马蹄形;纵神经索从头部到尾部逐渐变细;脑部神经细胞突起连接成网状,纵神经索内神经细胞突起呈纵向排列;咽壁神经组织排列成内外2个圆筒状。这些结构差异反映出日本三角涡虫在涡虫纲系统演化中处于较高级的地位。The purpose of this study is to provide crucial insight into the comparative study of the planarians neurobiology and to establish the base for studying the functions of genes which relative to the regeneration of brain with RNAi.The nervous system of planarians（Dugesia japonica） was observed with the light microscope after continuous paraffin section,HE staining and Masson staining.The central nervous system is composed of a horseshoe-shaped brain and two main longitudinal nerve cords that become gradually thin from the anterior to the posterior.The processes of nervous cells at the brain form the arrangement of reticulations,and the processes at the two main longitudinal nerve cords form the longitudinal arrangement.The pharyngeal nervous system is composed of two cylinders-outer cylinder and inner cylinder.These structural differences reflect that the planarian is in the position of a much higher grade in course of the systematic evolution of Turbellaria.

关 键 词：日本三角涡虫 神经系统 HE染色 MASSON染色 

分 类 号：X174[环境科学与工程—环境科学]