A grasp of psychology is also important in designing a good game; you want to know how players will feel at every point in the game. And it is vitally important that you can explain rules clearly in plain English.
The stomach's main function is digestion. It does this by: The stomach uses pepsin (enzyme) and peptidase (another enzyme) to break down proteins in your food. The acid released by the stomach doesn't break down food it only provides a good environment for the enzymes to work in.
23 Interesting Stomach Facts, Function, Parts & Diseases. The widest and most distensible part of your digestive system, called stomach, does a lot more than just digesting the food. This J-shaped pouch stores food, churns it, breaks it down both mechanically and chemically, kills microbes, secretes hormones and mucus, and also absorbs nutrients.