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Why Does Your Stomach Growl When You're Hungry?

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 Anatomy   |   Biology   |   Health   |   Environmental   |   Science
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Your digestive system is one big long tube that goes from your mouth to your butt, with a lot of interesting biological machinery in-between. How the body gets food through this long tube is accomplished via waves of muscle contractions, called peristalsis, that run a few inches at a time all down your digestive track. These waves of muscle contractions also serve to mix and churn foods, liquids, and digestive juices together. The resulting cocktail is called chyme.

Want the text version?: http://www.todayifoundout.com/index.php/2010/03/why-your-stomach-growls-when-you-are-hungry/

Sources:

http://en.wikipedia.org/wiki/Borborygmus
http://www.coolquiz.com/trivia/explain/docs/stomach.asp
http://health.howstuffworks.com/stomach-growling.htm
http://www.scientificamerican.com/article.cfm?id=why-does-your-stomach-gro

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