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wrote...
Posts: 16
Credits: 89
Rep: 0 0
5 years ago
If anyone could help with these I could give some answers to other I have done. I have the first 6 answers. Thank you
Simulating Factors Affecting Respirations
The following questions refer to Activity 3: Examining the Effect of Surfactant.
7. What effect does the addition of surfactant have on the airflow?

8. Why does surfactant affect airflow?

9. Why do premature infants have difficulty breathing?


The following questions refer to Activity 4: Investigating Intrapleural Pressure.
10. What effect does opening the valve have on the left lung? Why does this happen?


11. What condition does opening the valve simulate?

12. What is the value of the pressure in the left lung when the valve is opened?
0.00
13. What happened to the total flow when the valve was opened?

14. In the last part of this activity, when the reset button was clicked, what procedure would be used with real lungs?

Simulating Variations in Breathing
The following questions refer to Activity 5: Exploring Various Breathing Patterns.
15. What was the value of the PCO2 with rapid breathing?
How does this compare to the value with normal breathing? Explain any differences.

16. What was the value of the PCO2 with rebreathing?
Explain any difference.
53.96
17. What happened to the rate of respirations with rebreathing?

Why do you think this happened? (Hint: Think about the effects of chemoreceptors in the body).

18. What was the value of the PCO2 with breath holding? Explain any difference.

19. Was there a change in the rate of respirations when the breathing was resumed?

The following questions refer to Activity 6: Comparative Spirometry.
20. What was the value obtained for the (FEV1/FVC) x 100% with “normal breathing”?
 
21. What effect did “emphysema breathing” have on FVC and FEV1?

22. In “emphysema breathing” which of the two values, FVC and FEV1 changed the most?

23. What effect did “acute asthma attack breathing” have on FVC and FEV1?

24. In “acute asthma attack breathing” which of the two values, FVC and FEV1 changed the most?

25. Describe the effect that the inhaler medication had on the FVC and FEV1.

26. Did the values return to “normal”? Explain.

27. During “moderate exercise breathing,” which volumes changed the most?

28. During “heavy exercise breathing,” which volumes changed the most?
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5 years ago
Activity 3
7. The addition of surfactant causes increased airflow
8. Surfactant causes reduced surface tension in the alveoli, therefore the alveoli are able to expand to a greater degree
9. Premature infants lack a sufficient amount of surfactant

Activity 4
10. The left lung collapses because intrapleural and atmospheric pressure are equal
11. Pneumothorax
12. 0.00
13. Total flow was half the amount of flow recorded when both lungs were functuning
14. Insertion of a chest tube to remove air from the pleural cavity
wrote...
5 years ago
Thank you! I had already figured out the answers to 7-14 only need 15-28 now but I appricate your help. I am going to post 1-6 incase anyone else needs them.
Pulmonary Function Tests
The following questions refer to Activity 1: Measuring Respiratory Volumes.
1. What activity are you simulating when you click the ERV button?
What additional muscles are used in this activity?

Maximal exhale following normal TV exhale.
Internal intercostals and abdominal muscles.

2. What was the MRV calculated in Activity 1?

MRV- 7543_7485

3. What does the pump rate simulate?

It stimulates respiratory rate.

The following questions refer to Activity 2: Examining the Effect of Changing Airway Resistance on Respiratory Volumes.
4. How did changing the radius effect FEV1 (%)?

When decreasing radius you caused a decrease in the FEV1 %

5. What was the FEV1 at a radius of 5.00 mm?

73.9%

6. Do the results suggest that there is an obstructive or restrictive problem? Explain.

There is no problem, the airway is at normal radius.
wrote...
5 years ago
I also figured out 15-17 and 25-28 just need 18-24 Thank you to anyone who could help!!!
15. What was the value of the PCO2 with rapid breathing?
How does this compare to the value with normal breathing? Explain any differences.

-39.74 P CO2 is lower in rapid breathing cause more CO2 is expelled then is being made during respiration.

16. What was the value of the PCO2 with rebreathing?
Explain any difference.

-53.96 The air being inhaled is high in CO2

17. What happened to the rate of respirations with rebreathing?

It was slightly faster than normal breathing.

25. Describe the effect that the inhaler medication had on the FVC and FEV1.

It caused an increase to near normal values.

26. Did the values return to “normal”? Explain.

Neither returned to normal, the smooth muscles in the bronchioles didn’t relax to normal and there was mucus blocking the airway.

27. During “moderate exercise breathing,” which volumes changed the most?

Tidal volume

28. During “heavy exercise breathing,” which volumes changed the most?

Tidal volume
wrote...
5 years ago Edited: 5 years ago, Lissa
what's the answer 5, 6, 10,  Neutral Face Neutral Face Neutral Face help!
wrote...
5 years ago
Lissa the answer to 10 is in the 1st reply and 5 & 6 are in the 2nd reply Slight Smile
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