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The lining of the small intestine, which absorbs nutrients, is made of which epithelial type?
ASimple squamous (very thin, for diffusion)
BSimple columnar (tall, for absorption)
CStratified squamous (multi-layer for protection)
DPseudostratified ciliated (ciliated, for clearance)
Answer & Solution
Correct answer: B. Simple columnar (tall, for absorption)
The intestinal lining is SIMPLE COLUMNAR epithelium with MICROVILLI (brush border), maximising absorption surface. Simple squamous = alveoli, blood vessels. Stratified squamous = skin, mouth lining.
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