The stomach is a muscular organ which is present in our upper abdomen. If we were to present it on our bodies, it can be available on our left side just after the ribs. In basic terms, the stomach is a type of digestive sac. It is a continuation of the esophagus and consumes our churned food from it. Therefore, the stomach provides a kind of relationship between the esophagus and the small intestine, and is a defined pit which stops along the person's alimentary canal.