Bjugn R, Bøe R, Haugland H K
Institute of Anatomy, University of Bergen, Norway.
J Anat. 1989 Oct;166:171-8.
Applying different stereological techniques, the total ependymal volume in the spinal cord of mice was estimated to be 83 x 10(6) microns cubed, the number of cells to be 163,000 and the mean ependymal cell volume to be 510 microns cubed. Compared to choroid plexus cells in the third ventricle, the ependymal cells in the spinal cord contained a smaller mitochondrial volume (9.8% versus 4.6% of cell volume) and less rough endoplasmic reticulum (2.1% versus 0.4%). These findings indicate that the metabolic activity of the ependyma in the spinal cord is lower than that in the choroid plexus. Compared to liver and exocrine pancreatic cells, ependymal cells in both locations must be considered to have a rather low metabolic activity.
应用不同的体视学技术，估计小鼠脊髓室管膜总体积为83×10⁶立方微米，细胞数量为163,000个，室管膜细胞平均体积为510立方微米。与第三脑室脉络丛细胞相比，脊髓室管膜细胞的线粒体体积较小（分别占细胞体积的9.8%和4.6%），粗面内质网较少（分别占2.1%和0.4%）。这些发现表明，脊髓室管膜的代谢活性低于脉络丛。与肝脏和胰腺外分泌细胞相比，这两个部位的室管膜细胞代谢活性都相当低。
