| 皮质后索核投射纤维终末的超微结构和突触联系 |
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| 引用本文： | 邸淑君,吕国枫,张书琴,陈学善,宫瑾. 皮质后索核投射纤维终末的超微结构和突触联系[J]. 大连医科大学学报, 1995, 0(4) |
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| 作者姓名： | 邸淑君 吕国枫 张书琴 陈学善 宫瑾 |
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| 作者单位： | 辽宁师范大学 |
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| 摘 要： | 本文采用顺行溃变法对猫后索核内皮质后索核投射纤维终末的超微结构和突触联系进行了研究。在电损毁皮质２～５天后，电镜下发现后索核内皮质后索核纤维终末存在三种溃变形式：即电子致密型、神经微丝型和电子透明型，以电子致密型最为多见。溃变的纤维终末常较粗大，主要含有大量密集的圆形突触小泡，主要与神经元的树突或胞体接触形成不对称型的轴－树突触、轴－轴突触、轴－体突触、轴－树－树系列突触，并参与形成以树突为中心的突触复合体。
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| 关 键 词： | 大脑皮质；后索核；电解损毁；猫 |
The ultrastructure and synaptic connections of the projecting fibrous terminals of cat''''s cortical dorsal column nuclei |
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| Di Shujun,et al.. The ultrastructure and synaptic connections of the projecting fibrous terminals of cat''''s cortical dorsal column nuclei[J]. Journal of Dalian Medical University, 1995, 0(4) |
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| Authors: | Di Shujun et al. |
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| Affiliation: | Liaoning Normal Universitg Dalian Medical Universitg |
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| Abstract: | The ultrastructure and synaptic connections of the projecting fibrous terminals of cats'cortical dorsal column nuclei is studied by the degenerating method.After two or five days of electrolytic lesion in the cortices,three types of degenerating fibrous terminals were found with electron microscope in the dorsal column nuclei:electron dense pattern,neurofilamentous pattern and electron lucent pattern,with the first one being most common.The degenerating fibrous terminals were large and contained numerous rounded vesicles.They contact mainly with the dendrites or cell bodies of neurons to form the asymmetrical axo-dendritic synapses,axo-axonal synapses,axo-somatic synapses,axo-dendro-dendritic synapses and a synaptic complex with dendrites as a centre. |
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| Keywords: | cerebral cortex dorsal column neucleus electrolytic lesion cat |
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