The digestive system, sometimes called the gastrointestinal tract, alimentary tract, or gut, consists of a long hollow tubule. The digestive tract secretes substances used in the process of digestion into the canal. Th e growth of the body depends upon the consumption, absorption, and metabolism of food. Th is system also involves the elimination of waste. The digestive system is subject to many disorders, some of which are very common. Numerous drugs are used to treat these varying conditions.
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