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O'Connell - Water and Electrolytes
Water and electrolytes renal lecture
14
Medical
Professional
11/18/2012

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Cards

Term
Percentage of total body water in ECF
Definition
2/3
Term
Percentage of total body water in ICF
Definition
1/3
Term
Percentage of ECF in plasma
Definition
25%
Term
Percentage of ECF in interstitial fluid
Definition
75%
Term
Main cations in ICF
Definition
K+
Term
Main cations in ECF
Definition
Na+
Term
Main anions in ICF
Definition
Phosphates and proteins with lesser amounts of SO4 and HCO3
Term
Main anions in ECF
Definition
Cl-
Term
Main difference between interstitial fluid and plasma
Definition
More protein in the plasma
Term
Plasma sodium concentration
Definition
135-145 mEq/L
Term
Plasma potassium concentration
Definition
3.5-5 mEq/L
Term
Plasma Chloride concentration
Definition
95-105 mEq/L
Term
Ineffective osmole
Definition
osmole that readily crosses a membrane and does not cause net osmosis of water
Urea is an ineffective osmole
Term
Reason why elevated plasma urea concentrations do not elicit ADH release
Definition
Because urea is an ineffective osmole
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