why does exchange of respiratory gases continue to occur in lungs even after a maximum respiration

Even after forceful expiration, some of the volume of air is left in the lungs which is known as residual volume. This residual volume is responsible for exchange of gases. It is about 1.1-1.2 litres.

  • 24
Because some amount of air called "residual vume" still remains in lungs.
  • 0
***residual volume***
  • -1
What are you looking for?