Cholera toxin stimulates continuous secretion of electrolytes into the (*) lumen of this organ, drawing out mass amounts of water and causing severe diarrhea.
The hormone motilin initiates migrating myoelectric complexes within this organ. Its features include the crypts of Lieberkuhn and goblet cells, which secrete enteropeptidase and lubricating mucus respectively. Membrane proteins in this organ's cells include sodium-glucose cotransporters that allow an increase in each cell's osmolarity. Cholera toxin stimulates continuous secretion of electrolytes into the (*) lumen of this organ, drawing out mass amounts of water and causing severe diarrhea. Its epithelial cells have a brush border, and along with circular mucosal folds, those microvilli greatly increase the surface area available for absorption of water and nutrients. For 10 points, identify this part of the digestive tract, split into the ileum, jejunum, and duodenum.
The hormone motilin initiates migrating myoelectric complexes within this organ.
{small intestine}