On the Sympathetic Vasodilator Innervation of Eye Blood Vessels of Bullfrogs

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  • カエルの視器血管の交感神経性血管拡張神経支配について
  • カエル ノ シキ ケッカン ノ コウカン シンケイセイ ケッカン カクチョウ シンケイ シハイ ニ ツイテ

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Abstract

It was demonstrated that there exists a cholinergic sympathetic vasodilator inneron the blood vessels of the retina and external eye muscle of bullfrogs.<BR>These cholinergic sympathetic vasodilator fibers originate from the spinal cord passing through the posterior spinal roots II, III and the sympathetic chain.<BR>It is revealed that the cholinergic vasodilator fibers in the sympathetic chain become predominant over the adrenergic vasoconstrictor fibers in the sympathetic chain following a pretreatment with Reserpine.<BR>It is confirmed that the adrenergic vasoconstrictor fibers to the blood vessels of the retina and external eye muscle of bullfrogs originate from the spinal cord passing through the anterior spinal roots II, III and enter the sympathetic chain together with cholinergic sympathetic fibers from the posterior spinal roots II, III.

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