NUTRITION
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nutrients are absorbed through the mouth directly into the body cells
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Nutrients are absorbed through the villi in the small intestine into the blood stream
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Nutrients are absorbed by the large intestine and changed into vitamins
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Nutrients are absorbed directly through the stomach into the body cells
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Detailed explanation-1: -Villi that line the walls of the small intestine absorb nutrients into capillaries of the circulatory system and lacteals of the lymphatic system. Villi contain capillary beds, as well as lymphatic vessels called lacteals. Fatty acids absorbed from broken-down chyme pass into the lacteals.
Detailed explanation-2: -Each villus has a network of capillaries and fine lymphatic vessels called lacteals close to its surface. The epithelial cells of the villi transport nutrients such as carbohydrates and amino acids from the lumen of the intestine into these capillaries and lacteals (lipids).
Detailed explanation-3: -The jejunum absorbs most of your nutrients: carbohydrates, fats, minerals, proteins, and vitamins. The lowest part of your small intestine is the ileum. This is where the final parts of digestive absorption take place. The ileum absorbs bile acids, fluid, and vitamin B-12.