Anatomic and physiologic evaluation of a link between the nucleus reticularis gigantocellularis and nucleus ambiguous in the rat
| Autor: | Julie Y.H. Chan, Charles D. Barnes, Samuel H.H. Chan, B.T. Ong |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Nucleus ambiguus
Male Brain Mapping Medulla Oblongata Gigantocellular reticular nucleus General Neuroscience Autonomic Fibers Preganglionic Reticular Formation Central nervous system Heart Rats Inbred Strains Vagus Nerve Anatomy Biology Vagus nerve Rats medicine.anatomical_structure Reticular connective tissue Neural Pathways Medulla oblongata medicine Animals Neuroscience Nucleus Microinjection |
| Zdroj: | Neuroscience letters. 67(1) |
| ISSN: | 0304-3940 |
| Popis: | Localized microinjection of wheat germ agglutinin-conjugated horseradish peroxidase into the nucleus ambiguus (NA) of Sprague-Dawley rats retrogradely labeled neurons that were bilaterally located within the confine of the nucleus reticularis gigantocellularis (NRGC). These cells conformed with the Golgi description of cytoarchitectonic configurations and size distributions for neurons in this reticular nucleus. Furthermore, field potentials antidromically evoked at the NA by stimulating the vagus nerve were augmented by concurrent activations of bilateral NRGC sites that were themselves capable of eliciting hypotension and bradycardia. We conclude that the gigantocellular reticular nucleus may at least employ the cardiac vagal preganglionic neurons in the NA to exert its actions on the heart. |
| Databáze: | OpenAIRE |
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