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← Human Body & HealthWhy does the small intestine, with its relatively short length compared to the colon, perform the majority of nutrient absorption in the digestive system?
A)Greater muscle mass promotes rapid absorption
B)Lower pH inhibits bacterial nutrient competition
C)Villi increase surface area greatly✓
D)Enzymatic activity generates osmotic gradients
💡 Explanation
The small intestine features villi and microvilli that drastically increase its surface area, therefore maximizing nutrient absorption. This structure enables far greater absorption than the colon, because increased surface area directly enhances the capacity for nutrient uptake, rather than factors like pH or muscle mass.
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