Where is the stomach and how does it work?

Stomach Basics: The stomach is a large sac located just below your diaphragm at the end of a tube called the esophagus which connects your mouth to the stomach. The stomach's job is to begin the process of breaking down what we eat and drink into smaller pieces that can pass into the intestine and then be absorbed into the body. Digestion and absorption remove nutrients and we pass what is not absorbed.

Abdomen; complex: Just past the food pipe (esophagus) and right before the duodenum (first part of small intestine). Upper left side of abdomen. Works as a reservoir (stores food from a meal), produces acid to kill germs and help digestion, grinds food into small particles for the intestine, allows for vitamin B12 to get absorbed from food, makes enzymes to start digestion of proteins, etc. A vital organ.