Vitamins
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| Nutrition | The absorption of nutrients from food.
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| Vitamins | Organic compounds required in very small quantities but that play an essential role in specific metabolic pathways.
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| Fat-soluble vitamins | Vitamins A, D3, K, and E. These vitamins are absorbed primarily from the digestive tract. Vegetables are potential sources of fat-soluble vitamins.
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| Avitaminosis | Vitamin deficiency disease. Rarely results in the dietary insufficiency of fat-soluble vitamins.
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| Hypervitaminosis | Having too much of a vitamin causes this. Occurs when dietary intake exceeds the body's ability to store, utilize, or excrete a particular vitamin. Most commonly involves one of the fat soluble vitamins.
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| Water-soluble vitamins | B vitamins and vitamin C. Most are components of coenzymes. B vitamins are found in meat, eggs, and dairy products, and vitamin C is found in citrus fruits.
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| Intrinsic factor | A glycoprotein, secreted by the parietal of the stomach, that facilitates the intestinal absorption of vitamin B12.
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| Identify the two classes of vitamins. | Fat-soluble vitamins and water-soluble vitamins.
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| If vitamins do not provide a source of energy, what is their role in nutrition? | Vitamins play an important role in metabolic pathways by serving as coenzymes.
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| B1 | Thiamine
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| B2 | Riboflavin
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| B3 | Niacin
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| B5 | Pantothenic acid
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| B6 | Pyridoxine
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| B9 | Folic acid
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| B12 | Cobalamin
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| B7 | Biotin
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| C | Ascorbic acid
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