猫丘脑腹后外侧核的超微结构  

ULTRASTRUCTURE OF THE VENTROPOSTEROLATERAL THALAMIC NUCLEUS IN CAT

作　　者：贺家全[1] 孙文琢[1] 张孟良[1] 隋鸿锦[1] 张书琴[1] 宫瑾[1] 马晓凯[1] 王荣新[1] 

机构地区：[1]大连大学医学院,大连医科大学解剖学教研室

出　　处：《动物学杂志》1996年第4期12-16,共5页Chinese Journal of Zoology

摘　　要：采用电镜技术观察了猫丘脑腹后外侧核的超微结构。该核内的神经元可分为大小两种类型，大型直径在１５—４０μｍ，小型小于１５μｍ，其胞质内容无明显差别。树突较多见，直径从１—１０μｍ不等。轴突可分为三种类型：含圆形小泡的小终末、终末及扁平小泡的终末。突触类型主要为轴树突触，此外还可见到轴体、轴轴、轴轴树、树树突触以及以树突为中心的突触复合体。在树突之间、树突与胞体之间还存在有非突触的丝状连接。Ultrastructure of the neurons and synapse in the ventroposterolateral thalamic nucleus of the cat were investigated with the electron microscope.Ⅰ The neurons in this nucleus were of large and small types.The diameter of the large neurons were between 15 to 40 μm, where as that of the small neurons were less than 15μm.There were no obviously difference between the cytoplasmic contents of the large and small neurons.Most dendrites and the axons were observed in this nucleus. The axons were divided into three types,namely,the small terminals,the large terminals with round vesicles as well as the terminals with flat vesicles.Ⅱ Five types of synapses in this nucleus were observed,(1) axodendritic synapges,(2) axo-somatic synapses,(3) axo-axonicsynapses,(4) dendro-dendritic synapses,(5) axo-dendritic synapeses as well as(6) synaptic complex with dendrites in the center.There were no synaptic filament connections between the dendrite and dendrite or the dendrite and soma.

关 键 词：腹后外侧核 超微结构 猫 

分 类 号：Q959.838[生物学—动物学] S829.3[农业科学—畜牧学]