PATHOLOGY

Detailed explanation-1: -Within the CNS, the polarized ependymal cells form a continuous monolayer that lines the inner surfaces of the cerebral ventricles and the central canal of the spinal cord. This layer creates a cellular barrier between the cavities filled with CSF and the parenchyma of the brain or spinal cord.

Detailed explanation-2: -An ependymal cell is a type of glial cell that forms the ependyma, a thin membrane that lines the ventricles of the brain and the central column of the spinal cord. Their main function is to secrete, circulate, and maintain homeostasis of the cerebrospinal fluid that fills the ventricles of the central nervous system.

Detailed explanation-3: -Epithelial lining cells (ependymal cells) of ventricles of the brain or the central canal of the spinal cord.