Question

Listed below are four respiratory capacities (A-B) and four respiratory volumes of a normal human adult:

	Respiratory capacities	Respiratory volumes
A	Residual volume	2500 ml
B	Tidal volume	3500 ml
C	Inspiratory reserve volume	3000 ml
D	Expiratory reserve volume	4500 ml

Which one is correct matching?

• A. A
• B. B
• C. C
• D. D

Answer 1

The correct option is C C

Tidal Volume (TV): Volume of air inspired or expired during a normal respiration. It is approximately 500 ml.

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.