Prior to begin training for a marathon, you have some lung function tests performed. Your measured tidal volume at rest is 550 mL, your dead space volume is 150 mL, and your resting breathing rate is 12 breaths per minute. On a treadmill, your tidal volume increases to 1150 mL and your breathing rate increases to 30 breaths per minute. What is your alveolar ventilation rate when you are on the treadmill? O 30 Liters/min O 4.8 Liters/min O 12 Liters/min O 34.5 Liters/min O 6.6 Liters/min
Prior to begin training for a marathon, you have some lung function tests performed. Your measured tidal volume at rest is 550 mL, your dead space volume is 150 mL, and your resting breathing rate is 12 breaths per minute. On a treadmill, your tidal volume increases to 1150 mL and your breathing rate increases to 30 breaths per minute. What is your alveolar ventilation rate when you are on the treadmill? O 30 Liters/min O 4.8 Liters/min O 12 Liters/min O 34.5 Liters/min O 6.6 Liters/min
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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![### Lung Function Assessment and Training for Marathon
Prior to beginning training for a marathon, you have some lung function tests performed. Your measured tidal volume at rest is 550 mL, your dead space volume is 150 mL, and your resting breathing rate is 12 breaths per minute.
When you are on a treadmill, your tidal volume increases to 1150 mL and your breathing rate increases to 30 breaths per minute.
**Question:** What is your alveolar ventilation rate when you are on the treadmill?
A) 30 Liters/min
B) 4.8 Liters/min
C) 12 Liters/min
D) 34.5 Liters/min
E) 6.6 Liters/min
### Explanation:
To find the alveolar ventilation rate (AVR), use the formula:
\[ \text{AVR} = (\text{Tidal Volume} - \text{Dead Space Volume}) \times \text{Breathing Rate} \]
Given:
- Tidal volume on the treadmill = 1150 mL (or 1.15 L)
- Dead space volume = 150 mL (or 0.15 L)
- Breathing rate on the treadmill = 30 breaths per minute
Plug the values into the formula:
\[ \text{AVR} = (1.15 \, \text{L} - 0.15 \, \text{L}) \times 30 \, \text{breaths/min} \]
\[ \text{AVR} = (1 \, \text{L}) \times 30 \, \text{breaths/min} \]
\[ \text{AVR} = 30 \, \text{Liters/min} \]
Therefore, the correct answer is **A) 30 Liters/min**.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3140ffa9-0119-4ec7-994e-a6760b8ccca0%2Fefc1df9e-8377-486b-879e-b405bb4b1a2d%2Feuqu4f_processed.png&w=3840&q=75)
Transcribed Image Text:### Lung Function Assessment and Training for Marathon
Prior to beginning training for a marathon, you have some lung function tests performed. Your measured tidal volume at rest is 550 mL, your dead space volume is 150 mL, and your resting breathing rate is 12 breaths per minute.
When you are on a treadmill, your tidal volume increases to 1150 mL and your breathing rate increases to 30 breaths per minute.
**Question:** What is your alveolar ventilation rate when you are on the treadmill?
A) 30 Liters/min
B) 4.8 Liters/min
C) 12 Liters/min
D) 34.5 Liters/min
E) 6.6 Liters/min
### Explanation:
To find the alveolar ventilation rate (AVR), use the formula:
\[ \text{AVR} = (\text{Tidal Volume} - \text{Dead Space Volume}) \times \text{Breathing Rate} \]
Given:
- Tidal volume on the treadmill = 1150 mL (or 1.15 L)
- Dead space volume = 150 mL (or 0.15 L)
- Breathing rate on the treadmill = 30 breaths per minute
Plug the values into the formula:
\[ \text{AVR} = (1.15 \, \text{L} - 0.15 \, \text{L}) \times 30 \, \text{breaths/min} \]
\[ \text{AVR} = (1 \, \text{L}) \times 30 \, \text{breaths/min} \]
\[ \text{AVR} = 30 \, \text{Liters/min} \]
Therefore, the correct answer is **A) 30 Liters/min**.
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