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Ascending Pathways
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Description:
In the spinal cord, white mater is completely surrounded by gray mater. The majority of white mater is composed of myelinated axons that course the longitudinal axis of the cord. Functional pathways for specific senses and for pain occupy consistent regions of the spinal cord as they ascend to the thalamus or the cerebellar cortex."
Excerpt from the Presentation:
Ascending fibers are being added from the lowest levels through the brainstem while descending pathways are being terminated on targets as the pathways descend. As a result, the mass of the white mater is smaller at the lowest levels of the cord and large at the brainstem.
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