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Fluids and Electrolytes

Fluids and Electrolytes

Water 50-60% of total body weight

Intracellular> 45%

Extra Cellular> 15%    \ Intravascular/plasma – 10.5%
/ Interstitial – 4.5%

Homeostasis means intake must equal output.

Regulation:

  1. by the pituitary gland> antidiuretic hormone (kidneys take water back in)
  2. by thirst
  3. by kidneys

Electrolytes:

Cations +                     Anions –

Sodium                        Chloride

Potassium                   Bicarbonate

Calcium                       Phosphate

Magnesium

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