Q. What is vital capacity of our lungs?
A) Total lungs capacity minus residual volume
B) Inspiratory reserve volume plus tidal volume
C) Total lungs capacity minus expiratory reserve volume
D) Inspiratory reserve volume plus expiratory reserve volume
Explanation
[Solution from source] Vital capacity is ERV + TV + IRV, the most air that can be breathed out after a forced inspiration. Total lung capacity is VC + RV, so VC = TLC − RV. IRV + ERV leaves out the tidal volume, and IRV + TV is the inspiratory capacity. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.