The cells lining the small intestine have projections into the lumen of the intestine. These projections, combined with the highly folded layering of cells lining the lumen, function to:

Question

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The projections (called villi) and folds (called microvilli) of the cells lining the small intestine greatly increase the surface area for absorption of nutrients. This increase in surface area allows for more efficient absorption of nutrients from the digestive contents.

The Cells Lining the Small Intestine Have Projections into the Lumen