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5 Cards in this Set
- Front
- Back
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Blood O2 levels are inversely related to blood CO2 levels. TRUE/FALSE
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TRUE. O2 affectes the carotid and aortic bodies, which are stimulated by low O2 levels and relay this information to the brain via cranial nerves 9 and 10 to stimulate respiration.
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In the kidney, HCO3- filters freely through the glomerulous, but in itself is poorly reabsorbed through the luminal membrane of the tubule cell, in comparison with Chloride, which the renal tubules reabsob well. TRUE/FALSE
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TRUE.
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Are cell membranes more permeable to CO2 then they are to H+?
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Yes. An elevated plasma pCO2 is a better stimulus to H+ excretion by the kidney than is a decreased plasma pH.
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Normally the body produces more acid than base each day. TRUE/FALSE
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TRUE. The pH of the urine is generally acidic(about 6.0) but may be basic under other circunstances, where the plasma is alkalotic.
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What is the Henderson-Hasselbach equation?
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The buffering relations in the bicarbonate system are described in this equation.
This equation states; pH= 6.1 + log HCO3-/CO2. In this relationship, it may be seen that the pH will decrease with either an increase in CO2 conc. or a decrease in HCO3- conc. The body tries to maintain a constant pH, so the ratio ofHCO3- to dissolved CO2(carbonic acid) remains at about 20:1. |
