The Gastrointestinal System (GI) is made up of the gastrointestinal tract along with the accessory organs. The GI tract is a long hollow tube which extends from the oral cavity where food enters the body through the esophagus, stomach, small intestine, large intestine, rectum, and ends at the anus where the undigested food is expelled. Salivary glands, pancreas, and the liver are the accessory organs. They secrete enzymes which are essential for digestion. Gallbladder, which secretes bile, is also a part of the GI system. The process of digestion starts when you eat or drink and ends with your body expelling undigested food. In between this process, the organs of the GI system work to break down the food and absorb the nutrients and expel the unwanted or undigested food from the body. This function is impaired in people with gastrointestinal disorders due to various causes which may result in loss of nutrients. Some of the common gastrointestinal problems are: ...