Migratory motor complexes in the gut reappear after intervals of:
(A) 60 minutes (B) 90 minutes (C) 120 minutes (D) 150 minutes
(B) Ans: B. 90 minutes(Ref Ganong 25/e p496, 24/e p498)Migrating motor complexes in the gut reappear after intervals of 90 minutes.MMCs:Initiated by motilin.Circulating motilin increases at intervals of 100 min in interdigestive state.Coordinated with contractile phases of MMC.Contractions migrate aborally at a rate of about 5 cm/ min.