Solved by ramonistry
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.
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.
Stop & Think Questions:
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
Post-lab Quiz Results
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.
