Ependymaの電子顕微鏡学的考察

Electron Microscopic Observation of Ependyma

Ⅰ．緒論

　脳室の壁をなすEpendymaの微細構造の詳細な観察はBrain Edemaの研究，特に，髄液脳関門の問題やEpendymaから発生する腫瘍の研究などにたいへん重要な位置を占める．

　Ependymal cellは脳の中で，その大部分を形成しているGlia系細胞やNeuronにない特異な性質を持っている細胞である．

　The fine structure of the normal ependymal cell has been described. The ependymal cells form a closely knit single layer lining the ventricles. They are bordered on one side by the ventricular lumen and by the neuropil on the basal surface.

　The luminal surface is characterized by microvilfi and cilia. The former differ from those seen in the respiratory tract or intestine in that they have a smooth surface and are devoid of a coating material. They differ from the microvilli of the choroid plexus by being straight and relatively stubby.