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The digestive system is the first system to develop in humans, functioning like a tube where contents remain external until absorbed through its walls. As anatomical omnivores, humans have a specialized structure consisting of the alimentary canal and accessory organs. The primary functions include ingestion, where food enters through the mouth, and digestion, which involves breaking down large food particles into absorbable units for nourishment. Understanding these processes is crucial for appreciating how our bodies utilize the food we consume.
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