The descending and intrinsic serotoninergic innervation of an Elasmobranch spinal cord.

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dc.acquisition-srcen_US
dc.call-noAcc# 1532en_US
dc.contract-noen_US
dc.contributor.authorRitchie, T.C.en_US
dc.contributor.authorRoos, L.J.en_US
dc.contributor.authorWilliams, B.J.en_US
dc.contributor.authorLeonard, R.B.en_US
dc.contributor.otherJournal of Comparative Neurology.en_US
dc.date.accessioned2010-02-15T16:50:55Z
dc.date.available2010-02-15T16:50:55Z
dc.date.issued1984en_US
dc.degreeen_US
dc.descriptionp. 395-406.en_US
dc.description-otheren_US
dc.description.abstractThe descending and the intrinsic components of the serotoninergic (5HT) innervation of the Atlantic stingray spinal cord were described by comparing the distributions of neuronal elements exhibiting 5HT-like immunoreactivity (peroxidase-antiperoxidase method) in sections caudal and rostral to spinal transections. The cells of origin of the descending 5HT system were located with a double labeling method for both retrogradely transported horseradish peroxidase (HRP) and 5HT staining. The descending system provides virtually the entire 5HT innervation of the dorsal horn, the intermediate zone, and the dorsal and lateral portions of the ventral horn. Fibers of the descending 5HT system course in the lateral funiculus, the dorsal portion of the ventral funiculus, and in the submeningeal zones of the dorsal and lateral aspects of the spinal cord. This projection primarily originates from the 5HT cell groups of the caudal rhombencephalon (groups II and III; Ritchie et al., '83), with a minor contribution from group IV in the rostral rhombencephalon. The organization of the descending 5HT system in stingrays is remarkably similar to that of mammals. The intrinsic spinal 5HT system consists of cells distributed in the ventromedial spinal cord that have processes extending longitudinally in a ventral submeningeal fiber network. Fibers were traced from the submeningeal system to the ventral horn, where varicose processes were restricted largely to the neuropil ventral to the somata of the fin motoneurons. The existence of a well-defined intrinsic 5HT system in stingrays supports the hypothesis that such a system exists in the spinal cords of a variety of vertebrates.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeTexas coasten_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/19295
dc.latitudeen_US
dc.locationGBIC Collection file roomen_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries1532.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectAtlantic stingrayen_US
dc.subjectDasyatis sabinaen_US
dc.subjectneurophysiologyen_US
dc.titleThe descending and intrinsic serotoninergic innervation of an Elasmobranch spinal cord.en_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issue224en_US

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