The fine structure of capillaries and small arteries.
The fine structure of capillaries and small arteries.
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DOI：
10.1083/jcb.3.3.457
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发表时间：
1957-05-25
期刊：
影响因子：
--
通讯作者：
RUSKA H
中科院分区：
文献类型：
--
作者：
MOORE DH;RUSKA H
详细描述了哺乳动物心脏的毛细血管内皮细胞，并与其他器官和组织的毛细血管进行了比较。质膜的连续内陷和夹断以形成穿过细胞质的小泡，被认为是构成通过毛细血管壁的主动和选择性传输的手段（12）。这可能被称为细胞空积（通过细胞传播）。显示了小心脏动脉壁中不同层的精细结构。内皮突起延伸穿过内弹力肌的窗口，与平滑肌质膜直接接触。内弹性膜的厚度和密度变化很大，可能限制了过滤、扩散和渗透作用，以至于所述的窗口和运输机制（细胞排空）对于平滑肌层的功能完整性是必要的。可收缩的材料由非常细的、取向不良的细丝组成。
Details of capillary endothelia of the mammalian heart are described and compared with capillaries of other organs and tissues. Continuous invagination and pinching off of the plasma membrane to form small vesicles which move across the cytoplasm are suggested as constituting a means of active and selective transmission through capillary walls (12). This might be designated as cytopempsis (transmission by cell). The fine structure of the different layers in the walls of small heart arteries is demonstrated. Endothelial protrusions extend through windows of the elestica interna to make direct contact with smooth muscle plasma membranes. The elastica interna appears to vary greatly in both thickness and density, and probably restricts filtration, diffusion, and osmosis to such an extent that windows and the transport mechanisms described (cytopempsis) are necessary for the functional integrity of the smooth muscle layer. The contractile material consists of very fine, poorly oriented filaments.