Location: Outside U.S.
Date: Winter 2013-2014
Why after taking meal stomach makes noise?
After eating a meal, the digestive process is started. Some of the sounds are heard from the stomach as it churns the food mixture and as it periodically pushes food through the pyloric valve between the stomach and the first part of the small intestine (duodenum). The sounds may be louder if excess air is mixed with the food, such as from swallowing air or drinking carbonated beverages releasing carbon dioxide. Some of the sounds are from contraction of the small intestines pushing semi-liquid food contents through the various intestinal loops. The contraction of the intestines during digestion is called "peristalsis". The medical term for the sounds heard in the abdomen as part of the digestive process is called "borborygmi".
I hope this information helps answer your question.
Dr John Cowsar
San Antonio, Texas USA
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Update: November 2011