why do our stomachs grumble?

Question

i used to think it was because we were hungry but my stomach it grumbling and i just ate dinner.

what is going on inside our stomachs when it grumbles?

Answer 1

Stomach contractions are causing fluids and gases to move around. This happens for most people when their stomach is empty, but can also easily happen when it is full. To quote from the Mayo Clinic:

"Stomach noise — such as rumbling, gurgling and growling — typically is due to normal digestion. Stomach growling can occur when you're hungry. But it can also occur after eating or between meals when food is passing through your intestines.

"Hunger and appetite are controlled by a complex system of hormone-like substances primarily made by your digestive system. When you haven't eaten for a while, these substances are released and cause a part of your brain called the hypothalamus to "switch on" your desire to eat. A message is then sent to your stomach and intestines. This triggers muscle contractions and the release of acids and other digestive fluids — which causes the rumbling, grumbling sounds you hear — as your body prepares for you to eat. The thought, sight or smell of food also can trigger this response from your intestines."

Hard to beat that description!

Answer 2

well the grumbles can be from gas from the food and the acid n stuff?

Answer 3

when you are digesting food, "tubes" in your stomach push together as they push down the food. when you haven't eaten, there isn't anything there to digest and a growling noise is the result of those "tubes" pushing together.

described by my biology teacher