What is the function of folds and villi? a. allowing particles in the small intestines to flow from the jejunum to the ileum b. expanding volume to increase gas exchange from the respiratory system to the digestive system c. increasing surface area to improve nutrient absorption between the digestive and circulatory systems d. trapping food particles that flow through the small intestines
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What is the function of folds and villi? a. allowing particles in the small intestines to flow from...
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