Term
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Definition
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Term
| Major intracellular buffer systems in body |
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Definition
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Term
| Major extracellular buffer system of body |
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Definition
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Term
| What factors is hydrogen concentration determined by within a buffer system? |
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Definition
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Term
| Hydrogen concentration in blood |
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Definition
| 40 nanomoles/L (nM) = 7.4 pH |
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Term
| What must the ratio of bicarbonate to carbonic acid in the blood be for the pH to remain 7.4? |
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Definition
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Term
| Total concentration of all components of bicarbonate buffer system. |
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Definition
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Term
| Function of kidneys in bicarbonate buffer system |
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Definition
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Term
| Forms of phosphate that are predominate in the blood. Why? |
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Definition
dihydrogen phosphate and hydrogen phosphate the pKa of these two compounds is about 7, and the pH of the blood is 7.4
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Term
| How does the phosphate buffer system help in conserving sodium in blood? |
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Definition
Normally, different forms of phosphate have a certain number of hydrogen ions associate with them (ex: dihydrogen phosphate has one sodium). When they enter the kidney, they no longer need the sodium because they can combine with the hydrogen ions in the kidney filtrate. Remember, the kidney has the tendency to excrete hydrogen. By adding this hydrogen, I have just lowered the amount of cations needed to balance the reaction between dihydrogen phosphate and hydrogen phosphate by driving the reaction in favor of dihydrogen phosphate. |
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