Ependymal cells are one of the four main types of glial cells, and themselves encompass three types of cells 1:
- ependymocytes: line the ventricles of the brain and central canal of the spinal cord
- tanycytes: line the floor of the third ventricle overlying the median eminence of the hypothalamus
- choroidal epithelial cells: line the surface of the choroid plexus