The abdomen is the body's internal hub, where several of our most important organs are gathered in a protected but flexible space. These organs include digestive organs such as the stomach, small intestine, large intestine, liver, gallbladder and pancreas. These organs are responsible for the breakdown and absorption of nutrients, as well as detoxification and metabolism.
The kidneys and ureters are also located in the abdomen, which are responsible for purifying the blood and regulating both fluid and salt balance. The spleen is part of the immune system and breaks down old blood cells. All of these organs are surrounded by a protective peritoneum and are stored in different layers of muscle, fat and connective tissue that make up the abdominal wall. The abdomen is a very rich area of both blood vessels and nerves, which makes it sensitive to both illness and injury.