Lecture 12 Fluids _ Electolytes

Lecture 12 Fluids _ Electolytes - Lecture 12: Fluids...

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Unformatted text preview: Lecture 12: Fluids & Electrolytes 3/8/10 Fluids, electrolytes Fluids, electrolytes Fluids move freely and change Fluids move freely and change form according to the shape of container form according to the shape of container Body fluids water + dissolved Body fluids water + dissolved substances (solutes) = liquid portion of cells and tissues substances (solutes) = liquid portion of cells and tissues Some solutes are Some solutes are minerals (sodium, potassium, chloride, phosphorus, calcium) which are called minerals (sodium, potassium, chloride, phosphorus, calcium) which are called electrolytes electrolytes Electrolytes become Electrolytes become dissociated into + and ions when dissolved in water dissociated into + and ions when dissolved in water Our body is mostly water ( Our body is mostly water ( earths surface is 75% water) earths surface is 75% water) Males62% water Females58% water Females have more fat than males in their bodies Body fluids and Body fluids and electrolytes electrolytes The body is mostly made of water (~60- The body is mostly made of water (~60- 70% in children, ~50-60% in adults) 70% in children, ~50-60% in adults) Cells are mostly made of water (>70%): Cells are mostly made of water (>70%): life occurs under water= biological reactions happen in life occurs under water= biological reactions happen in water water Basics of Body Fluids and Electrolytes Basics of Body Fluids and Electrolytes-- Body fluid = liquid portion of cells Body fluid = liquid portion of cells and tissues = water + electrolytes and tissues = water + electrolytes-- Cells have electrolytes (+ or -- Cells have electrolytes (+ or -- charged elements called ions) that serve many functions charged elements called ions) that serve many functions-- The major ions The major ions inside inside of cells are of cells are potassium potassium (K) and chloride (Cl) (K) and chloride (Cl)-- The major ions The major ions outside outside of cells are of cells are sodium sodium (Na) and chloride (Cl) (Na) and chloride (Cl) Distribution of body fluids 2/3 body fluid within cells = intracellular fluid 1/3 body fluid outside cells = extracellular fluid Extracellular fluid in the tissues/organs = interstitial fluid flows between the cells that make up a particular tissue/organ Extracellular fluid in the liquid portion of the blood or lymph = intravascular fluid Blood is ~1/3 of extracellular fluid (plasma) Blood actually contains plasma and red blood cells Interstitial Fluidoutisde of blood capillary Body fluids play important Body fluids play important roles roles Fluids dissolve and transport substances - water is Fluids dissolve and transport substances - water is...
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This note was uploaded on 11/02/2011 for the course NST 10 taught by Professor Amy during the Spring '08 term at University of California, Berkeley.

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Lecture 12 Fluids _ Electolytes - Lecture 12: Fluids...

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