Activity 10

Exercise 10: Acid-Base Balance: Activity 1: Hyperventilation Lab Report
Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly.
1. The fastest compensatory mechanism for maintaining pH homeostasis in the human body is You correctly answered: c. the chemical buffering system.
2. An increase in hydrogen ion concentration would You correctly answered: d. decrease pH.
3. The amount of carbon dioxide in the blood is measured in You correctly answered: b. mm Hg.
4. The reaction of water and carbon dioxide is catalyzed by You correctly answered: a. carbonic anhydrase.
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Experiment Results Predict Question: Predict Question: What do you think will happen to the pH and PCO2 levels with hyperventilation? Your answer : b. pH will decrease and PCO2 will increase.
Stop & Think Questions: Were the pH and PCO2 in the normal range? You correctly answered: c. Both pH and PCO2 were in the normal range.
What was the effect of returning to normal breathing after hyperventilation? You correctly answered: b. The breathing stopped temporarily to retain carbon dioxide.
Experiment Data:
Condition
Min PCO2
Max PCO2
Min pH
Max pH
Normal
40
40
7.39
7.39
Hyperventilation
24.38
40
7.4
7.6
Hyperventilation / Normal
35.3
40
7.38
7.47
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Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly.
1. Hyperventilation results in You correctly answered: b. respiratory alkalosis.
2. With hyperventilation, the higher peaks on the tracing indicate You correctly answered: a. a larger volume of air.
3. Which of the following is not a potential cause of respiratory alkalosis? You correctly answered: d. emphysema
4. The kidneys can compensate for respiratory alkalosis by You correctly answered: b. retaining H+ and excreting bicarbonate ion.
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Review Sheet Results 1. Describe the normal ranges for pH and carbon dioxide in the blood. Your answer: The human body