Some healthy people may not realize what the liver or liver functions for overall body health. Some liver functions include destroying toxins in the blood, producing protein, and helping the digestion process. When the liver has been sick, then they realize the importance of this organ. Don't wait until your heart aches to realize how important this organ is. The liver has many vital functions in maintaining survival. The liver is the largest gland in the body. In adults, the average liver weight is 1.4 kilograms. This brownish red organ is located in the upper right abdominal cavity, exactly under the diaphragm and to the right of the stomach. Normally, you cannot feel this organ because it is protected by the rib cage. Under the liver, there is a gallbladder as well as a portion of the pancreas and intestines. Understanding the Various Functions of the Heart for the Body Here are some liver functions: Destroying old red blood cells. This process will turn the stool brown.