They depend on organs in the mouth and chest, such as the esophagus and tongue, to help chew, move food, and perform primary digestive functions. The abdomen also includes the urinary system.

The function of the large intestine, which is about five feet long (1.5 meters), is primarily the storage and fermentation of indigestible matter. Related: Digestive System: Facts, Function & Diseases ...

The colon is part of the large intestine, the final part of the digestive system. Its function is to reabsorb fluids and process waste products from the body and prepare for its elimination.