The document discusses gastric motility, which is the movement of food from the stomach to the intestines. It describes the migrating motility complex cycle (MMC), which produces waves of electrical activity that sweep through the intestines in regular cycles during fasting. The MMC triggers peristaltic waves to transport indigestible materials through the small intestine. During fasting, the MMC occurs in four phases - a prolonged phase I, increased contractility in phase II, peak activity in phase III, and declining activity in phase IV. During feeding, there are continuous contractions like phase II to break down food into a suspension that is slowly emptied from the stomach.

1. GASTRIC MOTILITY
By
Priyanka Pawar
Pooja sonawane
Eshani rane

3. Gastric motility :-
 Food is passed out from stomach to intestine.
There is specific motility pattern in fasted condition called as
migrating mayoelectric complex cycle (MMC) .
 MMC are waves of electrical activity that sweep through the
intestines in a regular cycle during fasting.
 These motor complexes trigger peristaltic waves, which
facilitate transportation of indigestible substances such as
bone, fiber, and foreign bodies from the stomach, through
the small intestine.

5. During fasting state :-
1. Phase I — A prolonged
period.
2. Phase II — Increased
frequency of action
potentials and smooth
muscle contractility
3. Phase III — A few minutes
of peak electrical and
mechanical activity
4. Phase IV — Declining
activity which merges with
the next Phase I

6. During fed state :-
■ Continuous contractions as in phase 2.
■ Contaction leads to decrease in the size of food particles (
less than 1mm) into suspension form towards pyrolus.
■ Onset of MMC delayed resulting in slow down of gastric
emptying rate.

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