APA 2121 Study Guide - Final Guide: Pernicious Anemia, Cervical Cancer, Chylomicron
20 Dec 2016
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Document Summary
Organic compounds (contain carbon) essential in small amounts. Promotes and regulate body processes necessary for growth, reproduction and maintenance of health. Classes: water soluble: b and c. Thiamin (b1), riboflavin (b2), niacin (b3), b6, and b12 etc: fat soluble: a, d, e, and k. About 40%-90% of vitamins in food are absorbed (mostly in small intestines) Bioavailability is affected by: absorption: fat soluble vitamins need dietary fat (chylomicrons, transport in blood: water-soluble vitamins: blood proteins, conversion of inactive pro-vitamins or vitamin precursors into active vitamins. Absorption of vitamins: in mouth, chewing breaks food into small particles helping to release vitamins, in the stomach, digestion of food releases vitamins. Immune functions: vitamin a, b6, c, d, and folate. Bone health: vitamin a, c, d, and k. Dissolve in water and are easily absorbed/excreted. Widely available in foods, especially in enriched grains, whole grains, legumes, nuts and seeds. Deficiency: beriberi: wet and dry, wernicke-koraskoff syndrome.
