Exercise 10: Acid-Base Balance: Activity 3: Renal Responses to Respiratory Acidosis and Respiratory Alkalosis Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The renal system compensates for You correctly answered: d. both respiratory acidosis and respiratory alkalosis. 2. Respiratory alkalosis is characterized by You correctly answered: a. pH greater than 7.45 and PCO2 less than 35 mm Hg. 3. Respiratory acidosis is characterized by You correctly answered: c. pH less than 7.35 and PCO2 greater than 45 mm Hg. 4. The functional functional unit of the the kidney is the You correctly answered: b. nephron.
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Experiment Results Predict Question: Predict Question 1: What effect do you think lowering the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : d. [H+ ] will decrease and [HCO3- ] will increase. Predict Question 2: What effect do you think raising the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : c. [H+ ] will increase and [HCO3- ] will decrease. Stop & Think Questions: The condition you just simulated is You correctly answered: b. respiratory alkalosis caused by hyperventilation. Can the renal system fully compensate for acidosis or alkalosis? You correctly answered: d. No, neither for respiratory alkalosis nor respiratory acidosis. Experiment Data: PCO2 40 30 60
Blood pH 7.39 7.61 7.32
[H+] in Urine normal decreased elevated
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[HCO3-] in Urine normal elevated decreased
Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. When adjusting the controls, what happens to the blood pH when you lower the PCO2? You correctly answered: a. The pH increases. 2. In uncompensated respiratory alkalosis, the You correctly answered: b. carbon dioxide levels of the blood are low. 3. What type of breathing results in acidosis? You correctly answered: d. hypoventilation and rebreathing 4. With renal compensation for respiratory acidosis, the pH of the urine You correctly answered: b. decreased because [H+ ] increased.
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Review Sheet Results 1. Describe what happened to the concentration of ions in the urine when the PCO2 was lowered. How well did the results compare with your prediction? Your answer: Al disminuir la PCO2 la concentracion de hidrigeniones disminuye en la orina , pero aumentara la concentracion de bicarbonato en sangre que actua como un tampos fisiologico . 2. What condition was simulated when the PCO2 was lowered? Your answer: Al disminuir PCO2 el paciente en encontro en alcalosis respiratoria por que se estaba hiperventilando . 3. Describe what happened to the concentration of ions in the urine when the PCO2 was raised. How well did the results compare with your prediction? Your answer: Al aumentar la PCO2 ocasionar que se aumente la concentracion de hidrogeniones en la orina y que disminuyan la concentraciones de de bicabonato en orina . 4. What condition was simulated when the PCO2 was raised? Your answer: Se encontraba en acidosis respiratoria por la mayor rentencio de CO2 , el paciente se estaba hipoventilando .
