RT Journal Article SR Electronic T1 REFLEXES FROM THE INTESTINAL MESENTERY ELICITED BY VERATRIDINE, ACETYLCHOLINE AND NICOTINE JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 120 OP 126 VO 124 IS 2 A1 William K. Riker YR 1958 UL http://jpet.aspetjournals.org/content/124/2/120.abstract AB Apnea and inhibition of the rhythmic contractions of the small intestine are shown to be reflex responses to injections of veratridine into the superior mesenteric artery of the anesthetized dog. Acetylcholine and nicotine are also capable of eliciting thsese reflexes, whereas epinephrine, isoproterenol and sodium cyanide are not. The reflex responses have their sole afferent pathway in the splanchnic nerves. The hypothesis is advanced that the sensory nerve-endings being stimulated are the terminations of fibers subserving the sensation of pain.