Electrolytes

What is an electrolyte?

any substance that separates into ions when dissolved in water
what are some examples of electrolyte

Na+, K+ and HPO_3^2-
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
- 4-co-factors
what is the most abundant extracellular ion?

Na+
what important function does Na+ perform in the body?

water retention
what is the most abundant anion in the body?

Cl^-
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?

K+
what is an important function in K+

fluid balance for cells
what hormone regulates K+

aldosterone
name the 3 important intracellular ions

HPO_4^-2, PO_4-3, and H_2PO^4-
why is acid-base important?

pH balance
what are the 3 principal buffering systems?
- 1-protein
- 2-bicarbonate buffer
- 3-phosphate beffuer
what is the most important buffer system?

proteins
what are fixed acids?

non-volatile acids
true or false?
kidneys are the only organ that excrete fixed acids?

true

Author

nando54321

221472

Card Set

Electrolytes

Description

Electrolytes

Updated

2013-05-28T16:33:25Z

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