摘要
对胎龄11～40周的26例人胚胎小肠神经进行了超微结构观察和体视学定量测定。结果表明,人胚胎期肌间神经节和平滑肌间距开始较小,以后逐渐增大,神经纤维网由稀疏逐渐变为致密;LGV在第3月时较少,到第6月明显增多;突触形态均不如成人典型。神经元细胞器的立体形态参数的峰值主要出现在4～6月并维持较高水平至胎儿出生。
The development of the nerves of the small intestine was studied in 26 human fetuses with the gestational age of 11 to 40 weeks.The findings are as follows:(1)The distance between the Auerbach's ganglia and the muscular layer is small in the early fetal period and it increases progressively as the fetus grows.(2)The density of neuropils increases gradually.(3)The number of large gradual vacuoles (LGV) is small in the 3rd month of gestation,and it increases gradually and is quite numerous in the 6th month.(4)The morphology of the synapses is not so typical as that of an adult.(5)The peak values of the stereological morphological parameters of the organelles in the neurons appear between the 4th-6th month and maintain at a relatively high level until the baby is bron.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
1992年第3期262-265,共4页
Journal of Third Military Medical University
