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Human Digestive System

Human Digestive System - Human Digestive System .

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Human Digestive System The human digestive system is a complex process that consists of breaking down large organic  masses into smaller particles that the body can use as fuel. The breakdown of the nutrients requires  the coordination of several enzymes secreted from specialized cells within the mouth, stomach,  intestines, and liver. The major organs or structures that coordinate digestion within the human body  include the mouth, esophagus, stomach, small and large intestine, and liver. Mouth In the human body, the mouth (oral cavity) is a specialized organ for receiving food and breaking up  large organic masses. In the mouth, food is changed mechanically by biting and chewing. Humans  have four kinds of teeth:  incisors  are chisel-shaped teeth in the front of the mouth for biting;  canines  are pointed teeth for tearing; and  premolars  and  molars
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