SUBMICROSCOPIC STRUCTURE OF THE MEMBRANOUS LABYRINTH .2. THE EPITHELIUM OF CORTIS ORGAN
SUBMICROSCOPIC STRUCTURE OF THE MEMBRANOUS LABYRINTH .2. THE EPITHELIUM OF CORTIS ORGAN
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DOI：
10.1007/bf00339444
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发表时间：
1961-01-01
期刊：
影响因子：
--
通讯作者：
IURATO, S
中科院分区：
文献类型：
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作者：
IURATO, S
本文用光镜和电镜观察了白色大鼠Corti氏器上皮细胞的亚显微结构，发现内毛细胞与外毛细胞在形态和结构上存在差异，内毛细胞与内支持细胞关系密切，呈多角体状，内毛细胞与外毛细胞之间的距离较近，内毛细胞与外毛细胞之间的距离较远，外毛细胞与内支持细胞之间的距离较远。而外毛细胞看起来像圆柱体，并被上皮内液体包围。结构特点包括尺寸的差异，毛、细胞质类器官的排列和感受神经连接方面。在这两种感觉毛细胞中，从表面向内可区分出4个不同结构的区带：顶区、中间区、核周区和感受神经元连接区。这些不同的区域的功能价值进行了讨论，并与已证明在其他受体。柱细胞和Deiters '细胞是支持细胞，有一个丝状的骨架，由亚显微镜下的单个细丝组成。这些纤维的直径约为215 μ m，与复层鳞状上皮的张力丝类似。柱细胞和Deiters细胞中的纤维排列不同。这些模式之间可能的功能差异进行了讨论。Hensen细胞、Claudius细胞、Böttcher细胞、内支持细胞、内外螺旋沟细胞均为规则的棱柱形细胞，无纤维，内质网少，类器少。
Investigations were performed by light and electron microscope on the submicroscopic structure of theepitheliumofCorti'sorganin the white rat.Morphological and structural differences between theinner hair cellsand theouter hair cellsare revealed.Theinner hair cellsare closely inter-related with the inner supporting cells and have a polyhedral shape, whereas theouter hair cellslook like cylinders and are surrounded by an intraepithelial fluid.The structural peculiarities consist of differences in the dimensions of the hairs, in the arrangement of cytoplasmic organoids and in the aspect of the receptoneural junction. In both sensory hair cells 4 zones of different structure can be distinguished from the surface inwards: apical zone, intermediate zone, perinuclear zone and receptoneuronal junction. The functional value of these different zones is discussed and compared with what has been demonstrated in other receptors.Thepillar cellsand theDeiters'cellsare supporting cells which have a filamentous skeleton, composed of submicroscopic individual filaments. These filaments have a diameter of about 215 Å and present some analogies with the tonofilaments of the stratified squamous epithelium. The filaments are arranged differently in the pillar cells and in theDeiters'cells. Possible functional differences between these patterns are discussed.Thereticular membraneis not an extracellular cuticle. It consists of intracellular cementitious material (like the terminal bars of the epithelial cells).TheHensen'sandClaudiuscells, theBöttcher'scells, theinner supporting cells, theinnerandouter spiralsulcus cells are regular prismatic cells with few endoplasmic organoids and without filaments.