Respiratory Volumes
Mediumbiology
If tidal volume is 500 mL and breathing frequency is 14 breaths/min, what is the minute ventilation? (mL/min)
Select the correct option:
Solution
Incorrect! Answer:
7000
- Tidal Volume (TV): The volume of air inspired or expired during a normal breath (approx. 500 ml).
- Minute Ventilation (VE): The total volume of gas entering the lungs per minute.
- Formula:
- VE=Tidal Volume×Respiratory Rate
- Calculation:
- VE=500 ml/breath×14 breaths/min
- VE=7000 ml/min (or 7 L/min).
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About This Question
- Subject
- biology
- Chapter
- human physiology
- Topic
- respiratory volumes
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
7000
- Tidal Volume (TV): The volume of air inspired or expired during a normal breath (approx. 500 ml).
- Minute Ventilation (VE): The total volume of gas entering the lungs per minute.
- Formula:
- VE=Tidal Volume×Respiratory Rate
- Calculation:
- VE=500 ml/breath×14 breaths/min
- VE=7000 ml/min (or 7 L/min).
This medium difficulty biology question is from the chapter human physiology, covering the topic of respiratory volumes. It appeared in the 2025 exam.
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