State the volume of air remaining in the lungs after a normal breathing. |NCERT solution|Class 11 Biology|Unit-17 Breathing and exchange of gases



Q.2:- State the volume of air remaining in the lungs after a normal breathing.

 

Answer:



Functional Residual Capacity (FRC): The volume of air which remains in the lungs after a normal expiration is called Functional Residual Capacity. FRC = ERV + RV.

ERV=1000 to 1100 ml

RV = 1100 to 1200 ml

So, FRC = 2100 to 2300 ml