Question

How do villi present in the small intestine increase the absorption rate?

A.
by increasing the surface area for absorption
B.
by decreasing the surface area for absorption
C.
by increasing the formation of nutrients
D.
by increasing the production of oxygen

Answer 1

Villi present in the small intestine increase the absorption rate by increasing the surface area for absorption

• As they typically occupy a thin wall, one cell thick, which makes a shorter diffusion path, Villi are specialised for absorption in the small intestine.  
• They adequately provide a wide surface area, so the nutrient absorption of fatty acids and glycerol into the blood stream would be more effective.  
• The small intestine villi project into the intestinal cavity, substantially expanding the specific area of the surface for direct absorption of food and adding digestive secretions.  

Answer 2

Answer:

The correct answer is A.

Step-by-step explanation:

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