Lecture 13--Blood health _ Immunity

Lecture 13--Blood health _ Immunity - Lecture 13: Blood...

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Lecture 13: Blood Health and Immunity 3/10/12 Blood's Role Nutrients have a role in improving or maintaining health and ability to prevent disease we can move towards better health or worse health Functions of Immune System protection from infectious diseases help heals wounds Immune System: network of cells & tissues that guard against and destroy invading chemicals Poor Nutrition Can Impair Immune System Impaired immune system due to low protein intake & inadequate energy intake → especially in children Obesity--> increased inflammation (excess of energy, heightened immune response) Insufficient intakes of minerals zinc → reduced # of important cells called lymphocytes copper → reduced # of important cells called lymphocytes iron overload can also impair immune function 1. Non-specific immune function, aka Innate Immunity (you are born with it) contributors tissues eg: skin, GI tract (barrier for protecting against pathogens), nasal membranes mucus eg: mucus lining of gut, nose, lungs enzymes chemicals specific cells (these cells produce mucus, chemicals, etc.) Specific Cells Involved in Non-Specific Immunity Phagocytes “to eat”: macrophages in tissues Neutrophils Summary of How Non-specific Immune Function Attempts to Prevent Disease
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Lecture 13--Blood health _ Immunity - Lecture 13: Blood...

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