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Water and The Body Fluids PowerPoint Presentation

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Description : Check out this medical presentation on Water and Nutrition, which is titled "Water & The Body Fluids", to know about water and the body fluids, and the functions of water in the human body.

Tags : Water, Nutrition, functions, human body

Published on : Jul 07, 2021 | Views : 1365 | Downloads : 0

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Slide 1-

Water & The Body Fluids 60% of adult body weight -Water makes up ¾ of the weight of lean tissue -Water makes up ¼ of the weight of fat Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Water & Body Fluids Functions of water: Transport Structural support for molecules Participates in metabolic reactions Solvent Lubricant & shock absorber Body temperature regulation Maintains blood volume & blood pressure
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Water & The Body Fluids Water balance Intracellular fluid-within the cells Extracellular fluid-outside the cells Interstitial fluid Plasma Copyright 2005 Wadsworth Group, a division of Thomson Learning
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One Cell And Its Associated Fluids Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Water & Body Fluids Water Balance -Intake/output = 2.5 liters/day -Regulated by hypothalamus & kidneys -Carefully controlled by: 1. Intake (liquid, foods, metabolic water) affected by thirst & satiety 2. Output (losses via kidneys, skin, lungs, feces) affected by blood salts, volume & blood pressure
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Copyright 2005 Wadsworth Group, a division of Thomson Learning How The Body Regulates Blood Volume
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Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Water & Body Fluids Recommendations: -Needs vary according to type of food eaten, temperature, humidity, activity level, etc. -General rule: 1–1.5 ml/kcal expended Example: if 2000 kcal “burned” then 2-3 liters suggested; >8 cups from fluids and the rest comes from food & metabolic water -Urine should be pale yellow -Caffeine & alcohol act as diuretics so not good water substitutes
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Fluid & Electrolyte Balance Electrolytes – salts that dissolve in water, forming ions Dissociation of salt in water Ions Cations- + charged particles Anions- - charged particles Electrolyte solution Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Copyright 2005 Wadsworth Group, a division of Thomson Learning Water Dissolves Salts And Follows Electrolytes
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Fluid & Electrolyte Balance Electrolytes attract water - affects fluid distribution in the body by osmosis Water follows electrolytes Solutes Osmosis Osmotic pressure Electrolyte concentration regulated by kidneys Electrolytes & proteins act as buffers to maintain the pH of body fluids – acid/base balance Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Acid-Base Balance pH Regulation by the buffers Bicarbonate Carbonic acid Regulation by the kidneys Regulation by the lungs Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Fluid & Electrolyte Imbalance Replacing lost fluids and electrolytes Oral rehydration therapy (ORT)-a simple solution of sugar, salt and water Copyright 2005 Wadsworth Group, a division of Thomson Learning
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Fluid & Electrolyte Imbalance Sodium and chloride most easily lost Different solutes lost by different routes Rapid fluid/electrolyte loss, i.e. vomiting, diarrhea, heavy sweating, fever, burns, wounds = medical emergency Copyright 2005 Wadsworth Group, a division of Thomson Learning