Question

Match the column I with column II

	Column I		Column II
A.	IC	I.	EC + IRV
B.	EC	II.	RV + VC
C.	FRC	III.	VC - ERV
D.	VC	IV.	ERV + RV
E.	TLC	V.	TV + ERV

• A. A-III, B-V, C-IV, D-I, E-II
• B. A-V, B-II, C-III, D-I, E-IV
• C. A-IV, B-III, C-I, D-V, E-II
• D. A-III, B-V, C-II, D-IV, E-I

Answer 1

The correct option is A A-III, B-V, C-IV, D-I, E-II

Tidal Volume (TV): About 500 ml of air is expired or inspired during a normal breathing.

Inspiratory Reserve Volume (IRV): The additional volume of air, a person can inhale by a forcible inspiration. This is approxmately equal to 2500 ml to 3000 ml.

Expiratory Reserve Volume (ERV): The additional volume of air, a person can exhale by a forcible expiration. This is approximately equal to 1000 ml to 1100 ml.

Residual volume (RV): It is the volume of air remaining in the lungs even after we forcibly breathe out. It is approximately 1100 ml to 1200 ml.

Inspiratory Capacity (IC): The total volume of air a person can inspire after a normal expiration. This is the sum total of tidal volume and inspiratory reserve volume (TV+IRV).

Expiratory Capacity (EC): This is the total volume of air a person can expire after a normal inspiration. This is the sum total of tidal volume and expiratory reserve volume (TV+ERV).

Functional Respiratory Capacity (FRC) represents the volume of air present in the lungs at the end of passive normal expiration. It is the sum total of ERV and RV.

Vital Capacity (VC) This is the maximum volume of air that a person can breathe in after a forceful expiration. This is the sum total of ERV, TV and IRV.

Total Lung Capacity (TLC): After a forceful inspiration, the total volume of air present in the lungs is called as TLC. This is the sum total of RV, ERV, TV and IRV.