Vitamins - Vitamins A Essential Non-choleric Organic...

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Vitamins A. Essential Non-choleric Organic Nutrient 1. Fat Soluble a) Vitamin A, D,E, K i. Vitamin A a. First fat soluble vitamin to be discovered b. Three forms of Vitamin A are active in the body – retinol, retinal, retinoic acid c. Retinol is stored in the liver d. Plants contain precursors : beta carotene and other carotenoids e. Key Functions in the body: 1. Vision, Immune system, maintenance of body linings and skin, bone and body growth, normal cell development, and reproduction. Vision Retina Cornea Keratin Xerophthalmis Night Blindness Infection Immunity Gene Regulation Bone Growth ii. Vitamin D a. Not an essential nutrient – body can produce Vitamin D from sunlight. b. Sunlight exposure effected by: 1. Air pollution
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2. City Living 3. Clothing 4. Geography 5. Homebound 6. Season 7. Sunscreen 8. Time of Day c. Hormone – blood calcium and healthy bones d. Immune system, brain, heart, pancreas, skin, reproduction e. Rickets – kids f. Osteomalacia – adults
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This note was uploaded on 04/01/2008 for the course HNF 150 taught by Professor Thurston during the Spring '07 term at Michigan State University.

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Vitamins - Vitamins A Essential Non-choleric Organic...

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