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The ileum, the final segment of the small intestine, is structured with a highly folded lining that includes numerous villi and microvilli, which increase its surface area for nutrient absorption. It contains a thin layer of smooth muscle to facilitate peristalsis and has specialized lymphoid tissue called Peyer's patches for immune function. The ileum's walls are also rich in blood vessels and glands that secrete digestive enzymes and mucus, aiding in the digestive process. Overall, its structure is optimized for efficient nutrient absorption before the contents move into the large intestine.

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AnswerBot

1mo ago

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