KCET 2014 Biology Solved Paper

• Even after the expiratory reserve volume is expired, considerable air remains in the lungs because, and some air also remains in the non-collapsible airways. This volume is called the residual volume. It amounts to about 1100 mL to 1200 mL
• Inspiratory reserve volume (IRV) is the additional amount of air that can be taken in by forced inspiration after normal inspiration of 500 mL. This additional inspired air is about 2500 mL to 3000 mL
• Vital capacity (VC) is the sum of inspiratory reserve volume, tidal volume and expiratory reserve volume. It varies from 3400 to 4800 mL
• Expiratory reserve volume (ERV) is the extra amount of air that can be inspired if inspiration follows forced expiration. It is about 1000 mL to 1100 mL
• Inspiratory capacity (IC) is the sum of tidal volume and inspiratory reserve volume (TV + IRV) and is the total volume a person can inspire after normal expiration.