摘要
应用常规超薄切片及冷冻复型透射电镜法,观察了二例猝死、三例临床活检正常成年男性附睾上皮的超微结构,发现人类附睾上皮主要由暗柱状细胞、明柱状细胞、纤毛细胞、基底细胞及极少量狭柱细胞组成。上皮及细胞的微细结构,从附睾头向尾端只是逐步移行,并无节段性截然分界。纤毛细胞主要分布在起始段,核上区胞质内含有一种规律性明暗间隔横纹的纤维样结构,其机能意义待查。附睾头侧端的暗柱状细胞(以及明柱状细胞和纤毛细胞),具有细胞学吸收作用的超微特征,含吞饮小泡和溶酶体等,作者认为它们(主要是暗柱状细胞)可能与进入附睾的睾丸分泌液的吸收有关;附睾远侧部的明柱状细胞和暗柱状细胞特征,可能与附睾精浆液的分泌有关。在讨论中作者指出,有关附睾的详细功能,尚需进一步实验探讨。
The epithelial cells of normal human epididymis were studied by ultrathin section and freeze-etching replica techniques.It was found that the pseudostratified epithelium is composed mainly of dark-columnar,clear-columnar,ciliated,basal and few narrow-columnar cells.The ultrastructure of the epithelia from the head region to the tail of the epdidymis reveals no distinctive segmental demarcation,but transits gradually.The ciliated cells distributed chiefly in the initial segment of epididymis,fibril-like elements were found frequently in the supranuclear region of its cytoplasm,yet their function remains unknown.The dark-columnar cells as well as the clearcolumnar and the cillated cells of the head region of the epididymis exhibit the cytological ultrastructural characteristic features of absorption as is often the case with endocytotic vesicles and lysosomes,etc.These morphologycal findings confirm the view that these cells,particularly the dark-columnar cell,appear to be responsible to the absorption of testicular secretion in the epididymis.The clear-columnar and the dark-columnar cells,especially the former,in the distal portion of the epididymis possesses the secretory cytological characterestics.It is suggested that these cells were concerned with the production of the epididymis semen.In the discussion,the authors pointed out that the scientific basis for the detailed functions of the epididymis remains to be investigated further.
作者
雷建章
应国华
黑兰荪
李淑荣
赵玉珍
张玉英
Lei Jianzhang;Ying Guohua;Hei Lansun Li Shurong;Zhao Yuzhen;Zhang Yuying(Hebei Medical College)
出处
《解剖学报》
CAS
1984年第1期101-106,126-127,共8页
Acta Anatomica Sinica
