Question

The average lung capacity is

• A. 7 litres
• B. 6 litres
• C. 9 litres
• D. 5 litres

Answer 1

The correct option is B 6 litres

Tidal Volume (TV): Volume of air inspired or expired during normal respiration. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 6000 to 8000mL of air per minute. Lung volumes and lung capacities refer to the volume of air in the lungs at different phases of the respiratory cycle. An average human respiratory rate is 30-60 breaths per minute at birth and decreasing to 12-20 breaths per minute in adults. The average total lung capacity of an adult human male is about 6 litres of air. Hence, the average lung capacity is 6 liters.

So, the correct answer is '6 liters'.