Exercise 10: Acid-Base Balance

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EXERCISE 10: Acid-Base Balance

ACTIVITY 1: Hyperventilation| Answers|
1. A substance that dissolves in water to release hydrogen (H+) ions is called a(n) _______.| Acid| 2. Which of the following is not a regulatory mechanism for acid/base balance in the body? a. the kidneys b. the respiratory system c. protein buffers d. the digestive system| D. The digestive system| 3. The maximum pH measured during hyperventilation was _______.| 7.67| 4. Describe the normal ranges for pH and PCO2 in the blood.| The normal range for pH is 7.35-7.45. while the normal range for PCO2 is 35-45| 5. Describe what happened to the pH and the carbon dioxide in the blood with hyperventilation.| The pH increases with hyperventilation and the PCO2 decreases.| 6. Explain how returning to normal breathing after hyperventilation differed from hyperventilation without returning to normal breathing.| When returning to normal breathing, respiration stops completely for approximately ten seconds in order to help build up the amount of CO2 before returning to normal breathing after hyperventilation.| 7. Describe some possible causes of respiratory alkalosis.| Some possible causes of respiratory alkalosis, would be high altitudes, or hyperventilation.| ACTIVITY 2: Rebreathing|

8. In cases of acidosis, the pH of the blood is a. Between 7.4 and 7.55 b. Between 7.35 and 7.45 c. Less than 7.35 d. Greater than 7.55| C. Less than 7.35| 9. In this lab simulation, the minimum pH during rebreathing was _______.| | 10. If a person is “treated” in a hospital emergency department by breathing in and out of a paper sack, this is a classic example of _________ to lower the blood pH.| Rebreathing| 11. Hypoventilation results in a. lightheadedness. b. numbness around the lips.Answer: _________ c. an accumulation of CO2 in the blood. d. a good treatment for respiratory acidosis.| C. an accumulation of CO2...
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