text: The<unk>  or<unk>  response is one of a number of physiological reflexes controlling the motility, or peristalsis, of the gastrointestinal tract.  It involves an increase in motility of the colon in response to stretch in the stomach and byproducts of digestion in the small intestine.  The small intestine also shows a similar motility response.
  The reflex was demonstrated by myoelectric recordings in the colons of animals and humans, which showed an increase in electrical activity within as little as 15 minutes after eating.  The recordings also demonstrated that the<unk>  is uneven in its distribution throughout the colon.  The sigmoid colon is more greatly affected than the right side of the colon in terms of a phasic response; however, the tonic response across the colon is uncertain.  A number of neuropeptides have been proposed as mediators of the<unk> .  These include serotonin, neurotensin, cholecystokinin (CCK), and gastrin.
  Clinically, the<unk>  has been implicated in pathogenesis of irritable bowel syndrome.  Also, the serotonin (5HT3) antagonist ondansetron decreases the tonic response to stretch.
option_0: Gastrocolic reflex
option_1: Bulbocavernosus reflex
option_2: Biceps reflex
option_3: Baroreflex
option_4: Ankle reflex
option_5: Moro reflex
option_6: Vagovagal reflex
option_7: Bezold-Jarisch reflex