NCERT Solutions for Class 11 Biology Chapter 17 Breathing and Exchange of Gases
Important Board Questions
Breathing and Exchange of Gases
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Question : 14
What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.
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Tidal volume is the volume of air inspired or expired during normal respiration.
It is about 6000 to 8000 mL of air per minute.
The hourly tidal volume for a healthy human can be calculated as:
Tidal volume = 6000 to 8000 mL/minute
Tidal volume in an hour
= 6000 to 8000 mL × (60 min)
= 3.6 × 10₅ mL to 4.8 × 10₅ mL
Therefore, the hourly tidal volume for a healthy human is approximately 3.6 × 105 mL to 4.8 × 10₅ mL.
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