MEDICAL
DUODENUM JEJUNUM AND ILEUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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absorption of some vitamins
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absorbs most nutrients
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absorptions of water
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area of most chemical digestion
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Detailed explanation-1: -The jejunum is a major site for absorption of the vitamin folic acid and the end of the ileum is the most important site for absorption for the vitamin B12, and bile salts.
Detailed explanation-2: -The ileum is the final portion of the small intestine, measuring around 3 meters, and ends at the cecum. It absorbs any final nutrients, with major absorptive products being vitamin B12 and bile acids.
Detailed explanation-3: -Vitamins A, D, E, and K, fats, and cholesterol are absorbed in the lower third of the ileum. Vitamin B12 is absorbed just before the small intestine joins the large intestine. Bile salts are reabsorbed in the distal ileum and the ascending colon.
Detailed explanation-4: -The large intestine has 3 primary functions: absorbing water and electrolytes, producing and absorbing vitamins, and forming and propelling feces toward the rectum for elimination.