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9 Cards in this Set
- Front
- Back
What are the 2 pathways that convey somatosensory information from the body to the cerebral cortex?
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-There is one set for all of the body except orofacial complex
-one set for just the orofacial complex |
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What are the ascending spinal pathways?
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Somatosensory pathways for the body (except orofacial complex)
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What are the two ascending spinal pathways?
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-dorsal column/medial lemniscus pathway
-Anterior Lateral System (ALS) |
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What type of information does the dorsal column/medial lemniscus pathway carry?
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information concerned with fine touch, proprioception, and vibration
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How is the information carried from tehh receptor to the spinal cord?
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peripheral processes of dorsal root ganglion cells provide axons to the receptors, and project to the spinal cord
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Where do the processes from the DRG cells enter the spinal cord?
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central processes enter in the posterior horn and enter the posterior funiculus
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What posistion will axons from higher levels take as they enter the posterior funiculus?
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Will be more lateral, so somatotopic organization is maintained
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What level are the axons from in the fasciculus gracilis?
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ascending branches of fibers from the sacral, lumbar, and lower 6 Thoracic dorsal roots
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What level are the axons from in the fasciculus cuneatus?
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contains ascending branches of fibers from upper 6 thoracic and cervical dorsal roots
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