EXERCISE 10: Acid-Base Balance
ACTIVITY 1: Hyperventilation
1. A substance that dissolves in water to release hydrogen (H+) ions is called a(n) _______.
| 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 _______.
| 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.
| 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...
Please join StudyMode to read the full document