Rostrocaudal distribution of motoneurones and variation in ventral horn area within a segment of the feline thoracic spinal cord
| Autor: | Revers Donga, C. F. Meehan, Tim W. Ford, Natalia P. Anissimova, Peter A. Kirkwood, Jeremy Road, Shane A. Saywell |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Male
Cord medicine.medical_treatment Intercostal nerves Biology Anterior Horn Cell Anterior Horn Cells Thoracic Nerves medicine Respiratory muscle Animals Horseradish Peroxidase Motor Neurons Afferent Pathways General Neuroscience Histological Techniques fungi Laminectomy Anatomy musculoskeletal system Spinal cord medicine.anatomical_structure Spinal Cord nervous system Cats Axoplasmic transport Female |
| Zdroj: | The Journal of Comparative Neurology. 472:281-291 |
| ISSN: | 1096-9861 0021-9967 |
| DOI: | 10.1002/cne.20096 |
| Popis: | Retrograde transport of horseradish peroxidase, applied to cut peripheral nerves, was used to determine the rostrocaudal distribution of motoneurones supplying different branches of the ventral ramus for a single mid- or caudal thoracic segment in the cat. The motoneurones occupied a length of spinal cord equal to the segmental length but displaced rostrally from the segment as defined by the dorsal roots, with the number of motoneurones per unit length of cord higher in the rostral part of a segment (close to the entry of the most rostral dorsal root) than in the caudal part. The cross-sectional area of the ventral horn showed a rostrocaudal variation that closely paralleled the motoneurone distribution. The ratio between the number of motoneurones per unit length in the caudal and rostral regions of a segment (0.70) was similar to the ratio previously reported for the strength of functional projections of expiratory bulbospinal neurones (0.63). This is consistent with the motoneurones being the main targets of the bulbospinal neurones. J. Comp. Neurol. 472:281–291, 2004. © 2004 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text