Gastrointestinal Physiology. Though, monkeys and dogs respond to the same range of emetic stimuli as man with cytotoxic drugs and radiation, they do not suffer from pregnancy and motion sickness and post-operative and post-anaesthetic emesis. Postprandially, the coordinated action of the antrum and pylorus allows small aliquots of gastric contents to be emptied into the duodenum. Vomiting Vomiting is the forceful expulsion of the contents of the gastrointestinal system out through the mouth. The members of this class of antiemetic are palonosetron Aloxi , granisetron Kytril , ondansetron, dolasetron and tropisetron.
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