Tuesday, March 20, 2007

[Digestion] 2.What is digestive system ?


The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. Inside this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. There are also two solid digestive organs, the liver and the pancreas, which produce juices that reach the intestine through small tubes. In addition, parts of other organ systems (for instance, nerves and blood) play a major role in the digestive system.
The main organ in our body which is actively involved in digestion are shown in the figure on the left namely Mouth,Esophagus,Liver,Stomach,Gall Bladder, Pancreas, Small intestine ,Large intestine and Rectum .

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