Stomach The stomach is the organ that conducts the mammoth task of breaking down food. It receives the ingested food from the esophagus and mixes it and gastric juices to further break it down. The stomach is divided into four parts. The cardia receives the bolus from the esophagus. It then goes through the fundus, which is the uppermost part of the stomach. The stomach can dilate to accommodate about a quarter of food and liquid andout putting pressure on the stomach. Then the bolus is transported to the largest part of the stomach, the corpus or simply the body and it is here that the bolus is converted into chyme. Chyme is the semi-fluid partially digested food that is mixed and gastric juices. The chyme now goes through the antrum, which is the lowest part of the stomach. It is funnel-shaped and joins the stomach and the duodenum. Lower Gastrointestinal Tract The lower gastrointestinal tract comprises the small intestine, large intestine and the anus. During digestion the lower gastrointestinal tract helps the body to assimilate all the nutrients that have been simplified by the upper gastrointestinal tract. Small intestine
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