An evidence for adrenergic involvement in the choroidal circulation.
The ciliary nerve endings of adult albino rats were observed by transmission electron microscopy after the injection of 5,6-dihydroxytryptamine. The content of both large and small granular vesicles in these endings markedly increase in density by administration of the drug. The result suggests that the endings derive from the adrenergic nerve fiber.
D015115:5,6-Dihydroxytryptamine / Q000494:pharmacology; D000320:Adrenergic Fibers / Q000187:drug effects / Q000648:ultrastructure*; D000818:Animals; D002829:Choroid / Q000098:blood supply*; D008854:Microscopy, Electron; D051381:Rats; D012039:Regional Blood Flow
D015115:5,6-Dihydroxytryptamine