FINE-STRUCTURE OF CELLULAR LAYERS AND CONNECTIVE-TISSUE SPACE AT SPINAL NERVE ROOT ATTACHMENTS IN RAT
FINE-STRUCTURE OF CELLULAR LAYERS AND CONNECTIVE-TISSUE SPACE AT SPINAL NERVE ROOT ATTACHMENTS IN RAT
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DOI：
10.1002/aja.1001330107
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发表时间：
1972-01-01
影响因子：
--
通讯作者：
LOW, FN
中科院分区：
文献类型：
--
作者：
HALLER, FR;HALLER, AC;LOW, FN
含有神经根与脊髓连接的组织被从7只灌流缓冲醛的大鼠身上解剖出来。背根和腹根均取自脊髓各节段。所有组织均常规制备电子显微镜，根鞘外层与软脑膜外层同源，实质上是连续的。根鞘的内层是神经膜在蛛网膜下腔的结构改变和中心定向的延续，在外周和中枢神经系统的交界处附近终止为一个开放的管。在这里，神经内结缔组织间隙和软脑膜结缔组织间隙之间有直接的连续性。后者则通过软膜细胞之间的开窗与蛛网膜下腔直接联系。并对其与某些临床表现的关系进行了简要讨论。
Tissue containing the attachment of nerve roots to the spinal cord was dissected from seven rats perfused with buffered aldehydes. Both dorsal and ventral roots were obtained from all cord levels. All tissues were prepared routinely for electron microscopy.The outer layers of the root sheath are homologous with the outer layers of the pia mater and are essentially continuous with it. The inner layers of the root sheath, which are a structurally modified and centrally directed continuation of the perineurium across the subarachnoid space, terminate as an open‐ended tube near the junction of the peripheral and central nervous systems. Here there is direct continuity between the endoneurial connective tissue space and the pial connective tissue space. The latter, in turn, communicates directly with the subarachnoid space through fenestrations between pial cells. The relationship of this to certain clinical manifestations is briefly discussed.