substantia gelatinosa การใช้

• These fibers are intimately related to the substantia gelatinosa which is probably the terminal nucleus.
• Its primary neurons axons enter the spinal cord and then ascend one to two levels before synapsing in the substantia gelatinosa.
• The last decades of work in the Perl laboratory were principally devoted to characterizing the functional organization of the substantia gelatinosa.
• In turn the nucleus raphe magnus projects to the substantia gelatinosa region of the dorsal horn and mediates the sensation of spinothalamic inputs.
• It interacts predominantly with the ? ?-opioid ( Mu-Delta ) substantia gelatinosa ) of the spinal cord and in the spinal nucleus of the trigeminal nerve.
• However, some A delta fibers ( carrying fast, localized pain sensation ) also terminate in the substantia gelatinosa, mostly via axons passing through this area to the nucleus proprius.
• The non-myelinated fibers ascend or descend for short distances not exceeding one or two segments, but most of them enter the substantia gelatinosa at or near the level of their origin.
• Pseudounipolar neurons in the dorsal root ganglion have axons that lead from the skin into the dorsal spinal cord where they ascend or descend one or two vertebral levels via Lissauer's tract and then synapse with secondary neurons in either the substantia gelatinosa of Rolando or the nucleus proprius.