Lab 6

Reviewing Your Knowledge Exercise 33

1. E

2. G

3. D

4. A

5. F

6. C

7. B

8. A

9. D

1. Increase

2. Decrease

3. Increase

4. Decrease

5. Increase

6. Decrease

7. Increase

8. Decrease

9. Increase

10. Decrease

1. G

2. D

3. E

4. C

5. B

6. A

7. H

8. F

1. False, blood hydrogen ion levels will increase

2. True

3. True

Using Your Knowledge Exercise 33

1. Since each lung is in a separate pleural cavity, the collapse of one lung does not affect the other lung.

2. A lung with a pneumothorax does not inflate because the intrapleural pressure is no longer subatmospheric. The lung is not held tightly against the thoracic wall and does not inflate.

3. Hold your finger over the "trachea" of the bell jar and push the "diaphragm" upward.

4. Stays same

5. Increases

6. Decreases

7. Decreases

8. The parents know that if she holds her breath and passes out, the respiratory center will resume a normal breathing pattern;While holding her breath, blood carbon dioxide levels increase, blood H+ increases, and blood bicarbonate levels increase.

9. With the respiratory system severely restricted, the women could not inhale sufficient air. This resulted in hypoventilation, increased carbon dioxide, and increased hydrogen ions. The increased hydrogen ions depressed the breathing rate and insufficient oxygen reached the brain, causing fainting.

10. a) They are rebreathing exhaled air that has a higher carbon dioxide content and this increases the blood carbon dioxide levels.



b) Hyperventilation causes a flushing out of carbon dioxide from the blood. Since breathing is dependent on the carbon dioxide level, breathing generally returns to normal when the carbon dioxide level returns to normal.