Stomach "growling"

Does anyone else ever wonder why our stomachs growl at us when they are hungry? What is physically making the noise that we hear so clearly?

My stomach growls a lot, though I know I am not always hungry. So, I decided to look it up. Here is what I found!

It happens when your stomach walls squeeze together in an attempt to mix and digest food and there's no food there. Gases and digestive juices slosh around in your empty stomach and before you know it- "grrrooowwll." Yet hunger really has nothing to do with an empty stomach but, instead, is a product of certain nutrients missing in the blood. Our brains contain a "hunger center," which functions as an accelerator, or as a brake, for our stomachs and intestines. Once necessary nutrients are lacking from the blood, the dinner bell is rung, and the stomach and intestines come rumbling.

Very interesting....