Why does your stomach grumble when you are hungry. (Hint: The wall of the stomach are made of muscles that shoe peristaltic movement.)
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the correct answer is option no 3
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When the walls are activated and squeeze the tract's contents to mix and propel food, gas and fluids through the stomach and small intestines, it generates a rumbling noise. ... These MMCs travel along the stomach and small intestines and lead to hunger contractions
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