Most of the products of digestion are absorbed in the
Correct answer: C. small intestine
- A. stomach
- B. large intestine
- C. small intestine
- D. oesophagus
Explanation
The small intestine is long, folded and covered in villi and microvilli, so its absorptive surface is measured in hundreds of square metres, and by the time chyme reaches it digestion is essentially complete. The stomach absorbs only alcohol and a few drugs, and the large intestine takes up water and mineral ions rather than nutrients. Damage to the villi, as in coeliac disease, causes malnutrition even on a good diet.
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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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