Migratory motor complex – Mechanism

  • In an empty stomach, a wave of depolarisation starts in the proximal stomach every 90 minutes
  • This proceeds distally till the end of the ileum
  • This wave of depolarisation is immediately followed by a peristaltic wave that starts in the proximal stomach and travels to the terminal ileum
  • The depolarisation wave together with the peristaltic wave is known as the Migratory Myoelectric Complex (Migratory Motor Complex)
  • It is one of the ways by which gastric motility influence intestinal motility (Another example being gastroileal reflex)

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