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15 Cards in this Set
- Front
- Back
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Bicarbonate-carbonic acid buffer system |
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CO2 + H2O → H2CO3 → H+ + HCO3-
(Describe what's happening in this reaction) |
In red blood cells, the enzyme carbonic anhydrase catalyzes the conversion of dissolved carbon dioxide to carbonic acid, which rapidly dissociates to bicarbonate and a free proton |
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What does the bicarbonate-carbonic acid buffer system do? |
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Bicarb equation |
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Ratio of bicarbonate to carbonic acid (or partial CO2)? |
20:1 |
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Define acidosis |
blood pH < 7.35 |
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Define alkalosis |
blood pH > 7.45 |
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R.O.M.E. |
Respiratory alkalosis or acidosis = pH and CO2 move in opposite direction
pH ↓ & CO2↑ = Acidosis pH ↑ & CO2↓ = Alkalosis
Metabolic alkalosis or acidosis = pH and bicarb move in equal direction
pH ↓ & HCO3 ↓= Acidosis pH ↑ & HCO3 ↑= Alkalosis |
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Causes of respiratory acidosis |
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Causes of respiratory alkadosis |
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Causes of metabolic acidosis |
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Causes of metabolic alkadosis |
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Effect of increased respiration on blood pH? |
Increased respiration = breathing out CO2 = decreases CO2 (acidic) = increases pH |
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Effect of decreased respiration on blood pH? |
Decreased respiration = not breathing out as much CO2 = increased CO2 (acidic) = decreases pH |
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How do kidneys affect blood pH? |
Decrease acid by excreting H+ (gets rid of acid)
Decrease acid by secreting bicarbonate into blood (increases base in blood) |
