in piglets followed for a week or more , the mmc cycle duration and phase iii duration ( period of maximal spiking activity ) were longer in the proximal small intestine than at the terminal ileum ( 80 +/- 5 versus 47 +/- 3 minutes and 5.1 +/- 0.3 versus 3.7 +/- 0.1 minutes , respectively ; mean +/- sem , p less than .005 ) , suggesting that some mmcs arise spontaneously in the distal small bowel without traversing the upper intestine .
C0021852
small bowel
C0021853
intestine