in fasted guinea pigs , the migrating myoelectric complex ( mmc ) was recorded from the small intestine and was observed to propagate aborally at a speed that declined with distance from the pylorus ( range of speeds of the front of phase 3 : 17.5 cm/min in the duodenum to 4.1 cm/min in the ileum ) .
C0021852
small intestine
C0013303
duodenum