HUMNNTR 2210 Lecture Notes - Lecture 18: Wound Healing, Salt, Extracellular Fluid
24 Oct 2016
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Vitamin c: sources: citrus fruits, potatoes, green peppers, broccoli, liver. Vitamin c toxicity: upper level 2000mg/d, gi distress. Water: 50-70% of body, muscle contains 73% water (fat contains ~20%) intracellular water. Skin is cooled as perspiration evaporates: removal of body waste. The thirst mechanism: not reliable, thirst signal is not triggered until person loses 1-2% of body weight in fluid, consume 3 cups of water for ever pound lost. Conserving water: antidiuretic hormone forces kidney to conserve water (reduce urine flow, aldosterone. Signals the kidney to retain sodium (water) Minerals inorganic no carbons: some minerals essential for metabolic function, may serve as cofactors or structural components of enzymes, essential minerals classified as major or trace. Major minerals: calcium (ca, phosphorus (p, magnesium (mg, sodium (na, potassium (k, chloride (cl, sulfur (s) Absorption of minerals: not all ingested minerals can be absorbed well, presence of dietary fiber, minerals from animal products are better absorbed, soil content of mineral, presence of vitamins.
