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Propriospinal fibers in the white matter of the cat sacral spinal cord

✍ Scribed by Dr. Kyungsoon Chung; Richard E. Coggeshall

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
697 KB
Volume
269
Category
Article
ISSN
0021-9967

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✦ Synopsis

The propriospinal system, which consists of those neurons completely contained within the spinal cord, is important because it underlies much spinal behavior. To provide quantitative data on this system, the present study determines numbers of axons in the isolated S2 cat spinal cord and compares these figures with the normal. The conclusion is that 60% of the fibers in the spinal cord at this location are propriospinal. Findings of particular interest are that the great majority of unmyelinated propriospinal axons are found in the dorsal part of the lateral funiculus, and that there are large numbers of descending myelinated fibers in the dorsal funiculi. These data will serve as a basis for evaluating axon numbers that follow various experimental regimens purporting to result in neural sprouting.

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