T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
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Cross section of the spinal cord within a vertebra surrounded by skeletal muscle.
The spinal cord is divided into the butterfly-shaped grey matter and surrounding white matter.
Gray Matter - butterfly-shaped region that contains nerve cell bodies and supporting glial cells.
Dorsal Horns (left, right) - upper parts of the wings that receive sensory input from peripheral neurons.
Ventral Horns (left, right) - lower parts of the wings that contain the cell bodies of motor neurons that give rise to the motor portion of peripheral nerves.
White Matter - contains ascending and descending axons (bundled into tracts) and supporting glial cells.
Central Canal - small, round structure in the center of the spinal cord that contains cerebral spinal fluid. Lined with a simple cuboidal-to-columnar epithelium of ependymal cells.
