dalmoaccor's Channel

dalmoaccor's Channel

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    Gastrointestinal System 07:12

    Gastrointestinal System

    by dalmoaccor (10/15/07) 3,230 views

    Doctor Berger explains the gastrointestinal system. The gastrointestinal tract (GI tract), also called the digestive tract, or the alimentary canal, is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste. The major functions of the GI tract are digestion and excretion.