Question

The inspiratory reserve volume $+$ tidal volume $+$ expiratory reserve volume is the same as

• A. Inspiratory capacity $+$ expiratory reserve volume
• B. Total lung capacity $-$ functional residual capacity
• C. Inspiratory capacity $+$ functional residual capacity
• D. Inspiratory capacity $+$ residual volume

Answer 1

Answer: (A)

Inspiratory capacity $+$ expiratory reserve volume

• Inspiratory Capacity (IC): Total volume of air a person can inspire after
  
• a normal expiration.
• Expiratory Reserve Volume (ERV):Additional volume of air, a person can expire by a forcible expiration.
• ERV averages 1000mL to 1100 mL.Hence, The inspiratory reserve volume + tidal volume + expiratory reserve volume is the same as Inspiratory capacity + expiratory reserve volume
• So, the correct answer is 'Inspiratory capacity + expiratory reserve volume'.