摘要
运用电子显微镜观察分析原代分离培养鼠胚脊髓的固有神经元的突触构筑。培养中主要可见中、小型神经元,彼此之间可形成大量的突触,以非对称性突触占多数,有轴-树突触和轴-体突触,树-树突触为少见。根据以前学者分类标准将终扣分成S、F、M、和G四型。超微结构有利于提示固有神经元经过简单突触从脊髓固有神经纤维接受突触传入,表示它们的冲动只是突触后机制控制信息传递。
An electron microscopic analysis of the synaptic architecture in propriospinal neurons of cultured fetal mouse spinal cord has been undertaken. The size of the perikarya in the cultured spinal cord represents a range from small- to medium sized neurons, which form many synapses each other. There are many axo-dendritic and axo-somatic synapses in the culture but direct dendro-dendritic apposition is rarely seen. Four morphological types of synaptic boutons, S, F, M and G are classified according to criteria used by previous investigators. The ultrastructural details available suggest that the propriospinal neurons receive synaptic input from propriospinal fibers through simple synapses. It may indicate that their impulses can be controlled only postsynaptically.
出处
《实验生物学报》
CSCD
1992年第4期349-357,共9页
Acta Biologiae Experimentalis Sinica
关键词
脊髓
神经元
突触
Propriospinal neuron. Synaptic architecture. Primary dissociated cell culture. Electron microscopic observation. Mouse embryo.
