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z- Test #4 Electrolytes
MLS 4625 Dr. Saleh A. Naser Fall 2010
7
Chemistry
Undergraduate 4
12/02/2010

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Term
Electrolytes
Definition
Molecules that become ionized in solution such as
- Na+, K+, Cl- & CO2
Term
Cations
Definition
negatively charged ions that moves toward the Cathode
Term
Anions
Definition
positively charged ions that moves toward the Anode
Term
Sodium (Na+)
Definition
-major extracellular cation
-responsible for half of the osmolality of the plasma
-sodium reabsorption in the distal tubules occurs w/ aid of Aldosterone
Term
Potassium (K+)
Definition
Major intercellular cation
Term
Chloride (Cl-)
Definition
major extracellular anion
mostly found in the stomach, and the large intestine
This explains why the stomach is highly acidic
Term
Carbon Dioxide (CO2)
Definition
Total CO2 : 33% bound to protein, 3% is gas, 64% HCO3 and H2CO3

We only measure HCO3 and H2CO3
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