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The function of the stomach is to store and partially digest food. The stomach is a J-shaped sack that lies between the esophagus and the small intestine.


According to InnerBody, the actual size of the stomach varies from person to person, but on average it's big enough to contain around 1 to 2 liters of liquid and food during one meal. The stomach can expand to hold around 3 to 4 liters.


Common causes of stomach pain include indigestion, constipation or food poisoning. A stomach virus or menstrual cramps are also causes of stomach pain, states WebMD.


The stomach stores swallowed and digested food, mixes it with digestive juices, and empties its contents into the small intestine. The stomach is part of the body's gastrointestinal tract, according to the National Institute of Diabetes and Digestive and Kidney Diseases.


Stomach acid breaks down food so that it is more easily absorbed by the body, according to MedicineNet. Muscles in the wall of the stomach churn the food, stomach acid and enzymes together to create a thick liquid, known as chyme, that moves into the small intestine for further digestion.


Specialized cells in the stomach secrete hydrochloric acid to aid digestion and combat harmful bacteria, explains the University of Washington. Diet, lifestyle and certain medications result in acid escaping the stomach and entering the esophagus, causing acid reflux, according to WebMD.


The stomach sticks out following the accumulation of visceral fat (intra-abdominal fat), which is located within the peritoneal cavity. It is packed between the torso and internal organs, according to Princeton University.


Symptoms of a bacterial stomach infection include diarrhea, abdominal cramps, abdominal pain and bloody stools, according to MedlinePlus. Other symptoms include nausea and vomiting. Symptoms of a viral stomach infection or stomach flu include watery and nonbloody diarrhea, vomiting, abdominal pain a


A stomach band is a device used during adjustable gastric banding surgery that is wrapped around the stomach to form a ring to shrink the stomach, explains WebMD. The surgery is performed to help overweight individuals lose weight by limiting the stomach's ability to hold certain amounts of food.


The most common treatment options for stomach cancer include surgery, chemotherapy, radiation therapy and targeted therapy. Sometimes, multiple treatment options are combined based on the staging of the stomach cancer in the patient. Cures are difficult for stomach cancer, as detection often doesn't