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ULTRASTRUCTURE OF THE SPINE APPARATUS IN CEREBRAL CORTEX
Author(s): 
Pages: 366-369+452
Year: Issue:  4
Journal: Acta Anatomica Sinica

Keyword:  AxonDendritesSynapesDendritic spineSpine apparatus;
Abstract: 273 spine apparatus were observed under electron microscope. The results were as follows: 1.The flat-type sac of 5 types of the sac which constituted the spine apparatus covered the majority. Most of them were arranged parallelly and a few dispersively. The horseshoe or braid shaped arrangement was also seen in some cases. 2.The number of the sac varied from 3 to 6 in most of the cases, and a few over 10. Sometimes 2 or 3 spine apparatus can be seen within a single dendritic spine. 3.The spine apparatus often locates in the dendritic spine. In some cases the spine apparatus can be seen within the dendrites or in the juncture of dendritic trunk and dendritic spine 4.The morphological structure of the dense bands is comparatively complex. Most of the bends are narrow, some are broad, fine granular or mist-like in shape. The dense bends are located in between the adjacent sacs mostly and in few cases on one side of the spine apparatus. In some cases, one end of the dense band is fused with the sac.
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