Physioex Exercise 10 Acid/Base Balance

1560 WordsJan 31, 20117 Pages
Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds, pH = 7.4 2. At 40 seconds, pH = 7.4 3. At 60 seconds, pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so, how? No, the pH level of the blood did not change during normal breathing. 5. Was the pH level always within the “normal” range for the human body? Yes, the pH level was always within the normal range for human body. 6. Did the PCO2 level change during the course of normal breathing? If so, how? No, the PCO2 level did not change during the course of normal breathing. Activity 2a: Hyperventilation – Run 1 1. At 20 seconds, pH = 7.45 2. At 40 seconds, pH = 7.53 3. At 60 seconds, pH = 7.65 4. Maximum pH = 7.66 5.…show more content…
At normal PCO2 and pH levels, what level of H+ was present in the urine? The level of H+ was normal in the urine. 2. What level of [HCO3-] was present in the urine? HCO3- level was normal in the urine. 3. Why does the blood pH value change as PCO2 changes? The blood pH value changes as PCO2 changes because CO2 dissolves in the blood forming carbonic acidic and lowering the pH value. 4. How does the blood pH value change as Pco2 changes? As the PCO2 level decreases the blood pH value increases. Activity 5: Renal Response to Respiratory Alkalosis 1. What level of [H+] was present in the urine at each of these PCO2/pH levels? PCO2 35/pH level 7.49 PCO2 30/pH level 7.58 PCO2 20/pH level 7.69 2. What level of [HCO3-] was present in the urine at each of these PCO2/pH levels? PCO2 35/pH level 7.49, [HCO3-] normal PCO2 30/pH level 7.58, [HCO3-] elevated PCO2 20/pH level 7.69, [HCO3-] elevated 3. Assuming that enough time has passed for the renal system to fully compensate for respiratory alkalosis, would you expect PCO2 levels to increase or decrease? 1. Would you expect blood pH levels to increase or decrease? ? PCO2 levels would increase, blood pH level would decrease 4. Which type of breathing resulted in PCO2 levels closest to the ones we experimented with in this activity – normal breathing, hyperventilation, or rebreathing? Hyperventilation 5. Explain why this type of breathing resulted

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