Nutrition4

Nutrition4 - EXAM 4 Chapter 7 Vitamins Nutrition Food and...

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EXAM 4: Chapter 7- Vitamins Nutrition, Food and You - Chapter Seven - The Vitamins Vitamins Organic compounds, vital to life. Indispensable to body function. Needed in minute amounts. Noncaloric essential nutrients. Also, precursors or provitamins. Fat Soluble Vitamins A, D, E and K. Transported like fats. Stored like fats. Excess accumulates. Stored for long periods of time Excesses can be toxic. Vitamin A Needed everywhere. Three active forms are: retinol retinal retinoic acid Functions A needed for epithelial growth A needed to fight infections. A needed for bone growth. A used for cell differentiation Eyesight – vitamin A part of rhodopsin, the visual pigment Vitamin A Deficiency: - night blindness - keratiization - xerophthalmia - impaired immunity - reproductive abnormalities - exhaustion - death Vitamin A Toxicity: - death - liver failure - fractures
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- birth defects - bone abnormalities - hemorrhage - hair loss - skin rashes Deficiency Diseases Keratinization of skin- bumpy skin, abnormal epithelial tissue growth
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Nutrition4 - EXAM 4 Chapter 7 Vitamins Nutrition Food and...

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