NERVE-FIBERS AND THEIR TERMINALS OF THE DURA-MATER-ENCEPHALI OF THE RAT
NERVE-FIBERS AND THEIR TERMINALS OF THE DURA-MATER-ENCEPHALI OF THE RAT
复制标题
DOI：
10.1007/bf00309843
复制
发表时间：
1987-01-01
期刊：
影响因子：
--
通讯作者：
SCHMIDT, RF
中科院分区：
文献类型：
--
作者：
ANDRES, KH;VONDURING, M;SCHMIDT, RF
大鼠脑膜由有髓鞘（a -轴突）和无髓鞘（c -轴突）神经纤维丰富供应。对于幕上部分，主要的神经供应来自三叉神经的所有三个分支。最后，250个有髓神经纤维和800个无髓神经纤维支配着幕上部分的一侧。硬脑膜的血管床上有长达200亩的毛细血管后小静脉。长度为M，有内皮开孔。淋巴管位于硬脑膜内。它们通过筛网板的开口离开颅腔，与横窦一起到鼓室球的吻侧，以及脑膜中动脉。神经周围鞘形成一个管状的网，包括a轴突和c轴突。它在硬脑膜顶部宽阔，在矢状窦沿鼻侧向尾侧延伸和在鼻窦汇合处密集。A轴突和c轴突的末端均为未封装型。源自a轴突的未包封的ruffini样受体存在于大脑浅静脉进入矢状窦和窦汇合处的硬脑膜结缔组织中。单个a轴突的末端与c纤维束在一个雪旺细胞内的最终过程中混合在一起，形成多轴突单位或末端（多达15个轴突轮廓）。形态学上的分化是由于这些末端的地形造成的；首先，在血管床的不同部分：毛细血管后小静脉，在硬脑膜内：内骨膜层，脑膜层的胶原纤维束和硬脑膜下间隙的间皮细胞层。
The dura mater encephali of the rat is richly supplied by myelinated (A-axons) and unmyelinated (C-axons) nerve fibres. For the supratentorial part the main nerve supply stems from all three branches of the trigeminal nerve. Finally, 250 myelinated and 800 unmyelinated nerve fibres innervate one side of the supratentorial part. The vascular bed of the dura mater exhibits long postcapillary venules up to 200 .mu.m in length with segments of endothelial fenestration. Lymphatic vessels occur within the dura mater. They leave the cranial cavity through the openings of the cribriform plate, rostral to the bulla tympani together with the transverse sinus, and the middle meningeal artery. The perineural sheath builds up a tube-like net containing the A- and C-axons. It is spacious in the parietal dura mater and dense at the sagittal sinus along its extension from rostral to caudal and at the confluence of sinuses. Terminals of both the A- and C-axons are of the unencapsulated type. Unencapsulated Ruffini-like receptors stemming from A-axons are found in the dural connective tissue at sites where superficial cerebral veins enter the sagittal sinus and at the confluence of sinuses. The terminations of single A-axons together with C-fibre bundels mix up in their final course in one Schwann cell to build up multiaxonal units or terminations (up to 15 axonal profiles). A morphological differentiation is made due to the topography of these terminations; firstly, in different segments of the vascular bed: postcapillary venule, within the dura mater: inner periosteal layer, collagenous fibre bundles of the meningeal layer and at the mesothelial cell layer of the subdural space.