Question

Listed below are the respiratory capacities and respiratory volumes(A-D) of a normal human adult in column I and match it with column II.
Column -I Column-II
A. Residual volume I. 2500 mL
B. Vital capacity II. 3500 mL
C. Inspiratory reserve volume III. 1200 mL
D. Inspiratory capacity IV. 4500 mL

• A. A – II; B – III; C – IV; D – I
• B. A – I; B – II; C – III; D – IV
• C. A – III; B – IV; C – I; D – II
• D. A – IV; B – III; C – I; D – II

Answer 1

The correct option is C A – III; B – IV; C – I; D – II

• Residual Volume (RV), about 1,200 mL, is the volume of air still remaining in the lungs after the expiratory reserve volume is exhaled.
• The Vital Capacity (VC), about 4,500 mL, is the total amount of air that can be expired after fully inhaling (VC = TV + IRV + ERV = approximately 80 percent TLC). The value varies according to age and body size.
• The Inspiratory Reserve Volume (IRV), about 2,500 mL, is the additional air that can be forcibly inhaled after the inspiration of a normal tidal volume.
• The Inspiratory Capacity (IC), about 3,500 mL, is the maximum amount of air that can be inspired (IC = TV + IRV).