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Encyclopedia Britannica - Main :: GRA-GUI |
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GROUP XX . Digitalis.This group
squill, Urechites suberecta, Convallaria majalis, Nerium Oleander, Hellebores niger, Antiaris toxicaria (the upas
others. The active principles of these vary a good deal in chemical composition , but they are all non-nitrogenous neutral bodies. Their action is exerted upon muscle, and chiefly upon the muscle of the heart and blood vessels. The individual muscle-fibres
tract
complete
pulse
Ggour XXI. Picrotoxin.In large doses the action of picrotoxin is exerted chiefly on the medullary nerve centres, whereby irregular tonic-clonic convulsions
minute doses it stops the secretion of sweat.End of Article: GROUP XX If you wish, you can link directly to this article.
<a href="http://jcsm.org/StudyCenter/Encyclopedia/GRA_GUI/GROUP_XX.html"> GROUP XX </a> |
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