Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of :
Residual Volume
Inspiratory Reserve Volume
Tidal Volume
Expiratory Reserve Volume
Residual Volume (RV) -
Volume of air remaining in the lungs even after a forcible expiration.
- wherein
This averages 1100 mL to 1200 mL.
Option 1)
Residual Volume
This solution is correct
Option 2)
Inspiratory Reserve Volume
This solution is incorrect
Option 3)
Tidal Volume
This solution is incorrect
Option 4)
Expiratory Reserve Volume
This solution is incorrect