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BIOLOGY TOPIC 6 HUMAN PHYSIOLOGY
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Question:
What are villi? (4)
Author: Sammy UniverseAnswer:
Finger-like projections on the epithelial lining of the intestine absorb monomers formed by digestion + mineral ions & vitamins increase the surface area = optimize absorption rate Epithelial cells are connected by tight junctions = impermeable barrier bw body tissues and digestive juices
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Sammy Universe