Question

The volume of air inspired or expired during normal breathing is:
1. Residual volume
2. Expiratory reserve volume
3. Tidal volume
4. Inspiratory reserve volume

Answer 1

Correct Answer - Option 3 : Tidal volume

Explanation:

• Tidal volume:
• The air that normally goes in and out of the lungs during breathing (500 ml). 
• A healthy man inspires or expires 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.
• Residual Volume (RV): Volume of air remaining in the lungs even after a forcible expiration. This averages 1100 mL to 1200 mL.