PEX-10-03 - Physio Ex 9.1 PDF

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Physio Ex 9.1...

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Name: Steffany Rivera 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 unit of 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 7.38 7.58 7.28

[H+] in Urine normal decreased elevated

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[HCO3-] in Urine normal elevated decreased

Post-lab Quiz Results You scored 25% by answering 1 out of 4 questions correctly. 1. When adjusting the controls, what happens to the blood pH when you lower the PCO2? Your answer: c. The pH stayed the same. Correct answer: 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? Your answer: b. hypoventilation Correct answer: d. hypoventilation and rebreathing 4. With renal compensation for respiratory acidosis, the pH of the urine Your answer: a. increased because [H+ ] increased. Correct answer: 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: H+ will decrease and HCO3- will increase 2. What condition was simulated when the PCO2 was lowered? Your answer: Respiratory alkalosis 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: H+ will increase, and HCO3- will decrease 4. What condition was simulated when the PCO2 was raised? Your answer: Respiratory Acidosis

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