Central Canal Neurons describes a neural cell population with specific vulnerability or functional significance in neurodegenerative disease. This page covers cell morphology, molecular markers, connectivity, and disease-specific pathological changes.
Central Canal Neurons describes a neural cell population with specific vulnerability or functional significance in neurodegenerative disease. This page covers cell morphology, molecular markers, connectivity, and disease-specific pathological changes.
The central canal is the narrow, CSF-filled tunnel that runs through the center of the spinal cord, extending from the fourth ventricle to the conus medullaris. The tissue surrounding the central canal contains a specialized population of ependymal cells and neural progenitor cells that have significance for neural development, repair, and certain neurodegenerative processes.
Anatomy and Location
The central canal is located in the center of the spinal cord gray matter:
Position: Surrounded by the central gray matter (substantia grisea centralis)
Diameter: Approximately 0.1-0.5 mm in humans
Length: Extends from the obex (inferior border of the fourth ventricle) to the conus medullaris
Structural components: Lined by ependymal cells, surrounded by a subependymal zone
Cellular Components
Ependymal Cells
Type: Ciliated columnar epithelial cells
Function: Line the central canal, facilitate CSF flow
Markers: FoxJ1, S100β, acetylated tubulin (cilia)
Structure: Cilia beat to circulate CSF; basal bodies anchor to cytoskeleton
Subependymal Neural Stem Cells
Location: Layer adjacent to ependymal lining
Properties: Quiescent neural stem cells in adults
Markers: Nestin, Sox2, Pax6 (radial glia-like)
Potential: Can generate new neurons and glia in some conditions