NEETZoologyBreathing and Exchange of Gases
What is the average Expiratory Reserve Volume (ERV) in healthy adults?
Options
- A1000 mL to 1100 mL
- B1100 mL to 1200 mL
- C1200 mL to 1300 mL
- D1300 mL to 1400 mL
Correct answer
A. 1000 mL to 1100 mL
Step-by-step solution
Tidal Volume (TV): Volume of air inspired or expired during a normal respiration. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 6000 to 8000 mL of air per minute. Inspiratory Reserve Volume (IRV): Additional volume of air, a person can inspire by a forcible inspiration. This averages 2500 mL to 3000 mL. Expiratory Reserve Volume (ERV): Additional volume of air, a person can expire by a forcible expiration. This averages 1000 mL to 1100 mL.