Biology / Bio 2851 · Atom · ~20 seconds
Spinal Cord: Gray and White Matter
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The spinal cord's cross section shows gray matter, holding neuron and interneuron cell bodies, surrounded by white matter, holding myelinated axons that carry signals to and from the brain.
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Dorsal cord regions carry mostly sensory information toward the brain; ventral regions carry mostly motor signals away.
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Spinal nerves do not regenerate on their own once severed, unlike some peripheral tissue.