摘要
本文在已对11周至38周胎儿大脑不同区域新皮质组织发生中，端脑壁的皮质板和边缘带进行了形态学研究的基础上，对11周至17周5个胎龄组的9例胎儿的端脑壁在额前区、运动区、枕区、颞区、岛区的室管膜层和室管膜下层，中间带、板下带三部分，利用光镜技术，分别进行了形态学观察及厚度的测量和比较。希望联系皮质板和边缘带的研究，从形态学方面探讨胎儿大脑新皮质发育的规律。结果表明：（1）端脑壁的各区带的发育遵循从内（深）向外（浅）的规则，各区带都有其发育较快时期；（2）11周时，在各脑区都存在较明显的前板下带，13至14周，真正的板下带形成；（3）室管膜层和室管膜下层、中间带、板下带的发育同皮质板和边缘带的发育密切相关。
The cortical plate and marginal zone in prefrontal area,motor area,temporal area,occipi tal area and insula of fetuses ranging from 11 weeks up to 38 weeks of fetal age have been studied already.In the present study,nine fetuses ranging from 11 to 17 weeks were selected to study the ventricular,subventricular,intermediate and subplate zones of cerebral wall,all of them will develop into constitution of cerebral cotex.Under light microscopy,the ventricu lar zone and subventricular zone,intermediate zone,subplate zone in all the five areas were observed and thicknesses of each zone were measured.Comparisions were taken on morpholo gy and thickness of the same zone in the different areas at the same age and in the same area at different ages.The results indicate as follows:(1)The inner zones of the cerebral wall de velop and mature slightly earlier than the outer ones.Each zone of the cerebral wall has its own period of rapid growth spurt during development,and the rapid growth of various zones may overlap each other in time span.(2)at the fatal age of 11 weeks, there is a presubplate zone in every areas,the real subplate zone appears between 13 weeks and 14 weeks,(3)The development of ventricular zone,subventricular zone,intermediate zone and subplate zone re lates closely to the development of conical plate.
出处
《四川解剖学杂志》
1997年第4期227-234,共8页
Sichuan Journal of Anatomy
关键词
室管膜层
室管膜下层
中间带
板下带
形态学
Ventricular zone,Subvetricular zone, Intermediate zone, Subplate zone, Morphology
