in higher animals, the interaction between the digestive system, circulatory, respiratory, urinary will give the cell material needed for life, cut out the waste and maintain equilibrium of the composition and content of the substance in the extracellular fluid. Most of the digestive system includes the specialized service Division for the transport, storage and digestion of food. The different parts of the digestive system will perform the task of digesting as goofy mechanical-chemical, chemical digestion, absorption of the products of digestion, or excessive waste laoij
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