Physioex 8 Exercise 10: Acid/Base Balance Worksheet
Respiratory Acidosis and Alkalosis
Activity 1: Normal Breathing
1. At 20 seconds, pH = 7.4
2. At 40 seconds, pH = 7.4
3. At 60 seconds, pH = 7.4
4. Did the pH level of the blood change at all during normal breathing? If so, how? The pH did not change during the normal breathing.
5. Was the pH level always within the “normal” range for the human body? Yes it was.
6. Did the PCO2 level change during the course of normal breathing? If so, how? No it did not change either.
Activity 2a: Hyperventilation – Run 1
1. At 20 seconds, pH = 7.48
2. At 40 seconds, pH = 7.52
3. At 60 seconds, pH = 7.65
4. Maximum pH = 7.65
5. Did the pH level of the blood change at all during this run? If so, how? Yes it did, when the breathing rate changed the pH began to rise.
6. Was the pH level always within the “normal” range for the human body? If not, when was the pH value outside of the normal range, and what acid/base imbalance did this pH value indicate? The pH was within the normal range until the subject started to hyperventilate. The rising pH indicated that the body was expelling CO2 and H+.
7. Did the PCO2 level change during the curse of this run? If so, how? Yes, the PCO2 level dropped from 40 to 19.7 because the body was getting rid of CO2 by hyperventilating.
8. If you observed an acid/base imbalance during this run, how would you expect to renal system to compensate for this condition? The renal system would generate H+ and excrete HCO3- to counteract the respiratory system and lower the pH back to homeostasis.
9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes change? The tidal volume and the rate increased drastically from normal breathing.
10. What might cause a person to hyperventilate? Anxiety, fear, and even high altitudes with a decrease in oxygen would cause to body to breath faster and deeper to maintain homeostasis.
Activity 2b: Hyperventilation – Run 2
1. What
Activity 1: Normal Breathing
1. At 20 seconds, pH = 7.4
2. At 40 seconds, pH = 7.4
3. At 60 seconds, pH = 7.4
4. Did the pH level of the blood change at all during normal breathing? If so, how? The pH did not change during the normal breathing.
5. Was the pH level always within the “normal” range for the human body? Yes it was.
6. Did the PCO2 level change during the course of normal breathing? If so, how? No it did not change either.
Activity 2a: Hyperventilation – Run 1
1. At 20 seconds, pH = 7.48
2. At 40 seconds, pH = 7.52
3. At 60 seconds, pH = 7.65
4. Maximum pH = 7.65
5. Did the pH level of the blood change at all during this run? If so, how? Yes it did, when the breathing rate changed the pH began to rise.
6. Was the pH level always within the “normal” range for the human body? If not, when was the pH value outside of the normal range, and what acid/base imbalance did this pH value indicate? The pH was within the normal range until the subject started to hyperventilate. The rising pH indicated that the body was expelling CO2 and H+.
7. Did the PCO2 level change during the curse of this run? If so, how? Yes, the PCO2 level dropped from 40 to 19.7 because the body was getting rid of CO2 by hyperventilating.
8. If you observed an acid/base imbalance during this run, how would you expect to renal system to compensate for this condition? The renal system would generate H+ and excrete HCO3- to counteract the respiratory system and lower the pH back to homeostasis.
9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes change? The tidal volume and the rate increased drastically from normal breathing.
10. What might cause a person to hyperventilate? Anxiety, fear, and even high altitudes with a decrease in oxygen would cause to body to breath faster and deeper to maintain homeostasis.
Activity 2b: Hyperventilation – Run 2
1. What