What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour. | NCERT solution | Class 11 Biology | Unit-17 Breathing and exchange of gases



Q.14:- What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.

 

Answer:

Tidal Volume (TV): The volume of air inspired or expired during a normal respiration is called Tidal Volume. It is approximately 500 ml in a healthy man. This means that a healthy adult can inspire or expire about 6 to 8 litre of air per minute.



Tidal Volume = 500 ml

Respiration rate = 12 per minute

Hence, Tidal Volume in 1 hour = 500 ml x 12 x 60 minute = 360000 ml = 360 litre