Exercise 10: Acid-Base Balance: Activity 1: Hyperventilation Lab Rep PDF

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Physio Ex 9.1...

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Name: Steffany Rivera Exercise 10: Acid-Base Balance: Activity 1: Hyperventilation Lab Report Pre-lab Quiz Results You scored 75% by answering 3 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 Your answer : c. bicarbonate ion. Correct answer: 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 : a. pH and PCO2 will decrease. 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 Hyperventilation Hyperventilation / Normal

40 19.7 35.3

40 40 40

7.42 7.4 7.38

7.42 7.69 7.47

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Post-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Hyperventilation results in Your answer: a. respiratory acidosis. Correct answer: b. respiratory alkalosis. 2. With hyperventilation, the higher peaks on the tracing indicate Your answer: d. elevated carbon dioxide in the blood. Correct answer: 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: pH: 7.35-7.45 pCO2: 34-45 mmHG 2. Describe what happened to the pH and the carbon dioxide level with hyperventilation. How well did the results compare with your prediction? Your answer: pCO2 decreases while pH increases. 3. Explain how returning to normal breathing after hyperventilation differed from hyperventilation without returning to normal breathing. Your answer: Returning to normal breathing after hyperventilation is different becayse the breathin pattern changes a little while in order to replenish the CO2 4. Describe some possible causes of respiratory alkalosis. Your answer: Traveling to high altitudes, hyperventilation due to a fever, panic attack, or anxiety.

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