应用扫描和透射电子显微镜观察研究大鼠中脑水管室管膜的超微结构特征。发现中脑水管壁具有平行走向的纵嵴,腔面被覆单层立方或柱状上皮;上皮细胞游离面可见大量纤毛、微绒毛及分泌泡;细胞核圆形,位于细胞中央;胞浆内细胞器分布具有明显的极性特点。通过超微结构研究,认为大鼠中脑水管不仅单纯是脑脊液引流的通路,而且还具有主动参与脑脊液分泌的功能。 Scanning electron microscopy and transmission electron microscopy were used to investigate the ultrastructural features of the ependymal membrane in rat middle cerebral cortex. Found in the brain wall with parallel to the longitudinal ridge, the cavity surface covered with single-layer cubic or columnar epithelium; epithelial cells free surface visible in a large number of cilia, microvilli and secretion of bubble; nucleus round, located in the central cell; cytoplasmic organelle distribution Has obvious polarity characteristics. Through the study of ultrastructure, it is considered that the rat middle cerebral tubule is not only the path of drainage of cerebrospinal fluid, but also has the function of actively participating in the cerebrospinal fluid secretion.