Mention where the following cells are located?

Mention where the following cells are located?
(i) Neuroglial cells (ii) Ependymal cells (Hi) Spindle cells

(i) Neuroglial cells These are supporting cells which forms a packing around the neurons in the brain, spinal cord and ganglia.
(ii) Ependymal cells They forms the epithelium that lines the cavities in the brain and spinal cord.
(iii) Spindle cells These are biconvex nucleated cells found in the blood of vertebrates
other than mammals.