Description:
The digestive system is responsible for providing the body with energy and nutrients. The digestive organs break down food into small nutrient molecules that are used to supply the body's energy needs, and also absorb the raw materials that are required for growth and repair. Mechanical digestion, such as chewing, breaks down food by physical action; chemical digestion uses digesting agents called enzymes to break down food particles even further, and occurs throughout the system - even in the mouth. Most absorption of nutrients happens in the small intestine. Waste products gather in the large intestine, and are passed out through the anus.
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