FINE STRUCTURE OF STRIA VASCULARIS OF CAT INNER EAR
FINE STRUCTURE OF STRIA VASCULARIS OF CAT INNER EAR
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DOI：
10.1002/aja.1001180218
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发表时间：
1966-01-01
影响因子：
--
通讯作者：
RODRIGUE.EL
中科院分区：
文献类型：
--
作者：
HINOJOSA, R;RODRIGUE.EL
用电镜观察了猫血管纹的微细结构。它由3层上皮细胞组成，与上皮内毛细血管密切相关。表浅行的细胞具有与耳蜗管腔邻接的凸状管腔表面。顶端的细胞质中含有许多被膜小泡和小泡想象，这被解释为一种微胞饮作用。质膜的深层内折将这些细胞的下2/3分成含有大量线粒体的薄隔室。这表明，边缘细胞的精细结构很好地适应参与调节的离子组成的内淋巴。中间行和基行的细胞有苍白的细胞质和许多突起。基底细胞的上升突起形成杯状结构，其部分地将每个顶细胞与上皮的其余部分隔离。毛细血管的内皮不可折叠，未观察到内皮衬里的不连续性。内皮基底层发出许多延伸进入渗透上皮的相互连接的细胞外通道系统。这些被解释为物质从毛细管快速扩散的途径。
The fine structure of the cat stria vascularis was studied with the electron microscope. It consists of 3 layers of epithelial cells in close association with intraepithelial capillaries. The cells of the superficial row have a convex luminal surface bordering on the cochlear duct lumen. The apical cytoplasm contains numerous coated vesicles and vesicular imaginations which are interpreted as a type of micro-pinocytosis. Deep infoldings of the plasmalemma divide the lower 2/3 of these cells into thin compartments containing numerous mitochondria. It is suggested that marginal cells are well adapted by their fine structure to participate in regulation of the ion composition of endolymph. The cells of the intermediate and basal rows have pale cytoplasm and numerous processes. Ascending processes of the basal cells form cup-like structures which partially isolate each apical cell from the rest of the epithelium. The endothelium of the strial capillaries is not remark-able and no discontinuities of the endothelial lining were observed. The endothelial basement lamina sends out numerous extensions into a system of interconnected extracellular passages that permeate the epithelium. These are interpreted as pathways for the rapid diffusion of materials from the capillaries.