Showing posts from July, 2012

How does the Digestive System Work?

The digestive system is the main functional system in the human body. It helps to provide essential energy and nutrients in our body by performing ADME (Absorption, Distribution, Metabolism and Excretion) of the foods, drinks or anything we ingest. In other words, the digestive system is a series of responsible organs that help to produce energy and digest foods in a human body. Organs of the Human Digestive System Several functional and auxiliary organs are involved in the digestion of foods. Organs of the upper and lower gastrointestinal tract are directly involved in the digestion process. Upper Gastrointestinal Tract: Mouth, teeth, tongue, pharynx, esophagus, and stomach . Lower Gastrointestinal Tract: Small intestine, large intestine , and anus . Liver, pancreas and gall bladder are also part of the digestive system, but as they indirectly involve in digestion, they're considered as auxiliary organs . How the Digestive System Works? When food enters into the mouth,