Villi and microvilli increase__________?
Correct answer: C. absorption
- A. digestion
- B. assimilation
- C. absorption
- D. ingestion
Explanation
Villi and microvilli greatly increase the surface area of the small intestine, allowing digested nutrients to pass more efficiently into blood and lymph. They do not primarily increase digestion itself, so option a is the likely choice of students who confuse nutrient breakdown with nutrient uptake.
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About Human Digestive System
The human digestive system breaks food into absorbable molecules through mechanical processing, enzyme action and chemical conditions along the alimentary canal. Questions cover the mouth, stomach, small and large intestines, liver, pancreas and associated secretions, including the digestion and absorption of carbohydrates, proteins, lipids, vitamins, minerals and water.
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