大鼠壁胸膜通透性的电镜观察  

Morphosis study on the permeability of the mesothelium of parietal pleura in rat

作　　者：马晶[1] 袁亮方[1] 李益民[1] 柏春枝[1] 

机构地区：[1]哈尔滨医科大学解剖学教研室,黑龙江哈尔滨150086

出　　处：《哈尔滨医科大学学报》2004年第3期244-245,F003,共3页Journal of Harbin Medical University

摘　　要：目的　观察大鼠壁胸膜的通透性 ,胸膜腔内物质的吸收途径。方法　向大鼠胸膜腔内注射示踪剂 ,应用光镜、透射电镜方法观察壁胸膜的物质吸收途径以及壁胸膜间皮的形态变化。结果　壁胸膜表面覆盖一层连续的间皮细胞 ,间皮细胞按形态可分为立方形和扁平形间皮细胞 ,立方形间皮细胞下的结缔组织内存在大量的毛细淋巴管。由毛细淋巴管内皮细胞突起穿过间皮下结缔组织与间皮细胞相连接而形成的间皮孔 ,是物质吸收的主要途径。结论　壁胸膜通过三种途径吸收物质 :①间皮孔的吸收作用 ;②间皮细胞的吞噬作用 ;Objective To observe the permeability of parietal pleura and discuss the absorptive pathway of the particulates in pleural cavity.Methods The permeability and morphosis of the mesothelium of the parietal pleura in rat were investigated by intrapleura injection with tracers and observed by light microscopy and transmission electron.Results The mesothelial cells lining the parietal pleura appeared as both cuboidal and flattened cell bodies.The lymphatic capillaries were well developed in the submesothelial layer under the cuboidal cell regions.The results showed that in the cuboidal cell regions of the mesothelium of parietal pleura,tracers passed through mesothelial layers into lymphatics via the mesothelial stomata,the stomata was formed by the projections of lymphatic endothelial cell connecting with the prolongations of the cuboidal mesothelial cell.Conclusion The particulates directly enter the lymphatic capillaries of the parietal pleura from the pleural cavity through: ①The mesothelial stomata of the parietal pleura;②Phagocytized by the mesothelial cells;③Intercellular gaps of the mesotheliunm.

关 键 词：壁胸膜 间皮细胞 通透性 间皮孔 

分 类 号：R329.1[医药卫生—人体解剖和组织胚胎学]