title: On the structure and function of a neurohemal organ in the eye cavity of Eledone cirrosa (Cephalopoda).
abstract: The subpeduncualte lobe of the octopod brain produces a hormone that is released into the orbit. The hormone was extracted from Eledone cirrosa and assayed on the isolated perfused heart of the same species. It has a remarkable effect on amplitude, beat frequency and blood pressure; compared to equivalent extracts of posterior salivary gland it is about 70 times more effective. The substance is not a biogenic amine.
mesh_terms: D000818:Animals; D004298:Dopamine / Q000032:analysis; D005123:Eye / Q000033:anatomy & histology; D006321:Heart / Q000187:drug effects*; D006728:Hormones / Q000032:analysis; D009490:Neurosecretory Systems / Q000032:analysis / Q000033:anatomy & histology / Q000648:ultrastructure; D009638:Norepinephrine / Q000032:analysis; D049831:Octopodiformes; D012701:Serotonin / Q000032:analysis; D014020:Tissue Extracts / Q000494:pharmacology*
chemical_list: D006728:Hormones; D014020:Tissue Extracts; D012701:Serotonin; D004298:Dopamine; D009638:Norepinephrine