General Science - Physics (Basics)
Which structure increases the surface area of the small intestine to aid absorption?
Which structure increases the surface area of the small intestine to aid absorption?
medium Q15 of 15
Step-by-Step Solution
Step 1: Identify absorption structures in small intestine
Villi are finger-like projections lining the small intestine that increase surface area for nutrient absorption.Step 2: Eliminate unrelated structures
Alveoli are lung air sacs, nephrons are kidney filtration units, and cilia are hair-like structures on cells; none increase intestinal surface area.Final Answer:
Villi → Option AQuick Check:
Small intestine surface area = Villi ✅
Quick Trick: Villi = absorption surface area boosters
Common Mistakes:
MISTAKES- Confusing villi with alveoli or cilia
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