• Chamberlain College of Nursing

• BIOS 255  Power Phys Lab week 6

LABORATORY REPORT
Activity: Respiratory Volumes

Date: 06.04.2018
Predictions
1. During exercise

2. During exercise

3. During exercise

4. During exercise

5. During exercise

Materials and Methods
1. Dependent Variable

2. Independent Variable

3. Controlled Variables

4. Which respiratory volume was calculated?

5. What was the purpose of the nose clip?

Results
Table 2: Average Breathing Rates and Lung Volumes

Laboratory Report/ Mellissa Madrigal/ Respiratory Volumes/ Dr. Asma Sayed/
Comparison of Resting and Exercising Lung Volumes and Breathing Rate
1. Did the breathing rate increase, decrease, or not change with exercise?

2. Did the tidal volume increase, decrease, or not change with exercise?

3. Did the expiratory reserve volume increase, decrease, or not change with exercise?

4. Did the inspiratory reserve volume increase, decrease, or not change with exercise?

5. Did the inspiratory capacity increase, decrease, or not change with exercise?

6. Did the functional residual capacity increase, decrease, or not change with exercise?

7. Did the minute ventilation increase, decrease, or not change with exercise?

Table 3: Lung Capacities and Minute Ventilation
Resting Values Exercising Values


Comparison of Resting and Exercising Lung Capacities and Minute Ventilation
Discussion
1. Explain the change in ERV with exercise.

2. Explain the change in IRV with exercise.

3. Explain the change in IC with exercise.

4. Explain the change in FRC with exercise.

5. Explain why RV does not change with exercise.

6. Explain why VC does not change with exercise.

7. Explain why TLC does not change with exercise.

8. During exercise, the depth of respiration increases. Name the muscles involved in increasing the depth of respiration and explain
how muscle contraction causes this increase.

9. Explain the importance of the change in minute ventilation with exercise.



10. Restate your predictions that were correct and give data from your experiment that support them. Restate your predictions that
were not correct and correct them with supporting data from your experiment.

Application
1. During strenuous exercise, TV plateaus at about 60% of VC but minute ventilation continues to increase. Explain how that would
occur

2. Emphysema causes alveolar dilation and destruction of alveolar walls which causes an increase in residual volume with air that
cannot be exhaled. Assuming that an individual's TLC does not change, explain why a person with developing emphysema is not
short of breath while resting, but becomes short of breath after climbing a flight of stairs.