鼻粘膜の自律神経支配について : そのI交叉熱電対血流計を用いた犬鼻粘膜血管の自律神経支配の検討
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The change in blood flow of the nasal mucosa in dogs produced by electrical stimulation of the efferent nerve innervating the nasal vasculature was studied quantitatively using thermoconductivity measurement method described by Hensel and Hagihara.The present study confirmed the recent findings of Jackson et al. studied by nasal permeability measurement.The effect of electrical stimulation of the cervical sympathetic nerve on the nasal blood flow was markedly diminished by section of the posterior nasal nerve or the etbmoid nerve.After section of both the posterior nasal nerve and the ethmoid nerve, cervical sympathetic stimulation gave no effect on the nasal blood flow.Section of the Vidian nerve gave no influence on stimulatory effect of the cervical sympatheticnerve.Electrical stimulation of the surrounding tissue of the maxillary artery gave no effect on the nasal blood flow.Stimulation of the Vidian nerve caused increase of the nasal blood flow with abundant nasal section.From above findings the parasympathetic fibers to the nasal mucosa is assumed to run in the Vidian nerve, but the sympathetic fibers in the dog to run with posterior nasal nerve and the ethmoid nerve.Swelling of the nasal mucosa with parasympathetic stimulation was accompanied by an increase in the nasal blood flow.But shrinkage of nasal mucosa produced by sympathetic stimulation was accompanied by a transient small increase of blood flow which was followed by a marked decrease in flow.This phase of increased blood flow was particularly apparent when weak sympathetic stimulation was applied.Whether this increase of the nasal blood flow produced by weak sympathetic stimulation was due to stimulation of sympathetic vasodilator fibers as was described by Blier or not was not confirmed in this experiment
- 社団法人 日本耳鼻咽喉科学会の論文
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