Question

Why does absorption of digested food occur mainly in the small intestine?

• A. Digestion is completed in small intestine
• B. Presence of villi
• C. Wall of intestine is richly supplied with blood vessels
• D. All of the above

Answer 1

Answer: (D)

All of the above

The small intestine is the most important part of the digestive system. Maximum absorption occurs in the small intestine because of the following reasons;
(a) Digestion is completed in the small intestine.
(b) The inner lining of the small intestine is provided with villi which increase the surface area for absorption of digested food.
(c) Wall of the intestine is richly supplied with blood vessels which assimilate the absorbed food to the other parts of the body.

Therefore, the correct answer is option D.