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Exercise 10: Acid-Base Balance: Activity 2: Rebreathing Lab Report
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
- In cases of acidosis, the pH of the blood is
You correctly answered: c. less than 7.35. - Carbon dioxide and water form
You correctly answered: a. carbonic acid (a weak acid). - Which of the following is true of respiratory acidosis?
You correctly answered: c. The amount of carbon dioxide in the blood is greater than normal. - Rebreathing
You correctly answered: b. is exemplified by breathing into a paper bag.
Experiment Results
Predict Question:
Predict Question: What do you think will happen to the pH and PCO2 levels during rebreathing?
Your answer : b. pH will decrease and PCO2 will increase.
Predict Question:
Predict Question: What do you think will happen to the pH and PCO2 levels during rebreathing?
Your answer : b. pH will decrease and PCO2 will increase.
Stop & Think Questions:
Which of the following can cause respiratory acidosis?
You correctly answered: c. airway obstruction
Which of the following can cause respiratory acidosis?
You correctly answered: c. airway obstruction
Experiment Data:
Condition Min PCO2 Max PCO2 Min pH Max pH
Normal 40 40 7.39 7.39
Rebreathing 40 54.88 7.22 7.42
Condition Min PCO2 Max PCO2 Min pH Max pH
Normal 40 40 7.39 7.39
Rebreathing 40 54.88 7.22 7.42
Post-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
You scored 100% by answering 4 out of 4 questions correctly.
- Rebreathing simulates
You correctly answered: a. hypoventilation and respiratory acidosis. - Hypoventilation results in
You correctly answered: c. an accumulation of carbon dioxide in the blood. - The renal system can compensate for respiratory acidosis by
You correctly answered: b. excreting H+ and retaining bicarbonate ion. - Respiratory acidosis can be caused by all of the following except
You correctly answered: d. an anxiety attack.
Review Sheet Results
- Describe what happened to the pH and the carbon dioxide levels during rebreathing. How well did the results compare
with your prediction?
Your answer:
pH decreased and P co2 increased as predicted. - Describe some possible causes of respiratory acidosis.
Your answer:
Lung diseases, obstructed airway. - Explain how the renal system would compensate for respiratory acidosis.
Your answer:
Renal system will excrete hydrogen ion to increase pH.
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