Lecture 4 Notes - Lecture 4 Iodine Selenium READINGS Iodine...

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Lecture 4 – Iodine & Selenium 09/13/2011 READINGS Iodine Deficiency – Zimmerman Selinium in Human Health and Disease - Fairweather I. MICRONUTRIENTS – INTRODUCTION Micronutrients - Required in Small amounts Micronutrients – NOT produced by body Types of micronutrients - Proteins i. Water soluble ii. Fat Soluble - Minerals II. MINERALS Inorganic 4% of body`s weight 15 essential minerals (can`t be synthesized) SOURCES : Meat , fish , milk, cheese, green veggies , legumes Animal source = High concentration and availability STRUCTURE – not destroyed (heat , acid, air) – retain identity FUNTIONS : 1. Structure of body tissues ( Ca) – teeth , bones , nails, blood , nerves 2. Osmotic balance - Na , K 3. Nerve impulse – Ca, Na 4. Muscle contraction – Ca , Na 5. Oxygen transport – Fe 6. Physical and mental development – Fe 7. Immune function – Zn Ca Na K Fe Zn - Structures - Nerve impulse - Muscle contraction -osmotic balance - nerve impulse -muscle contraction -osmotic balance -oxygen transport
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