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What is an electrolyte?
any substance that separates into ions when dissolved in water
what are some examples of electrolyte
Na+, K+ and HPO32-
what is non-electrolyte?
a substance that does not produce ions in water
what are some examples of non-electrolytes
glucose, uria and proteins
what is are the four functions of electrolyte?
- 1-control osmosis
- 2-acid-base balance
- 3-carry electrical current-action potential
what is the most abundant extracellular ion?
what important function does Na+ perform in the body?
what is the most abundant anion in the body?
what is one important function of Cl-
balances charger due to leaky channels
what 3 hormones regulate Cl-
angiotensin II, aldosterone and ANP
what is the most abundant cation?
what is an important function in K+
fluid balance for cells
what hormone regulates K+
name the 3 important intracellular ions
HPO4-2, PO4-3, and H2PO4-
why is acid-base important?
what are the 3 principal buffering systems?
- 2-bicarbonate buffer
- 3-phosphate beffuer
what is the most important buffer system?
what are fixed acids?
true or false?
kidneys are the only organ that excrete fixed acids?