ependymal

A new study has found that transplantation of stem cells from the lining of the spinal cord, called ependymal stem cells, reverses paralysis associated with spinal cord injuries in laboratory tests.

PhysOrg.com - latest science and technology news stories 2009

The CNS is bathed in a special fluid the cerebral spinal fluid (CSF), which is produced by the ependymal cells.

Neurotoxicity 2008

The ependymal layer is ultimately converted into the ependyma of the central canal; the processes of its cells pass outward toward the periphery of the medulla spinalis.

IX. Neurology. 2. Development of the Nervous System 1918

Many believe that it is produced by the growing together of the walls of the posterior part of the central canal and by the development from its ependymal cells of a septum of fibrillated tissue which separates the future funiculi graciles.

IX. Neurology. 2. Development of the Nervous System 1918

Three layers may now be defined—an internal or ependymal, an intermediate or mantle, and an external or marginal.

IX. Neurology. 2. Development of the Nervous System 1918

Later, by the growth and backward extension of the cerebellum, the roof is folded inward toward the cavity of the fourth ventricle; it assists in completing the dorsal wall of this cavity, and is also invaginated to form the ependymal covering of its choroid plexuses.

IX. Neurology. 2. Development of the Nervous System 1918

If a section across the wall of the hemisphere about the sixth week be examined microscopically it will be found to consist of a thin marginal or reticular layer, a thick ependymal layer, and a thin intervening mantle layer.

IX. Neurology. 2. Development of the Nervous System 1918

Neuroblasts from the ependymal and mantle layers migrate into the deep part of the marginal layer and form the cells of the cerebral cortex.

IX. Neurology. 2. Development of the Nervous System 1918

The ventral part of the mantle layer becomes thickened, and on cross-section appears as a triangular patch between the marginal and ependymal layers.

IX. Neurology. 2. Development of the Nervous System 1918

The germinal cells are large, round or oval, and first make their appearance between the ependymal cells on the sides of the central canal.

IX. Neurology. 2. Development of the Nervous System 1918