Breathing and Exchange of GasesMedium
Question
Match List I with List II :
| List I | List II | ||
|---|---|---|---|
| A. | Expiratory capacity | I. | Expiratory reserve volume + Tidal volume + Inspiratory reserve volume |
| B. | Functional residual capacity | II. | Tidal volume + Expiratory reserve volume |
| C. | Vital capacity | III. | Tidal volume + Inspiratory reserve volume |
| D. | Inspiratory capacity | IV. | Expiratory reserve volume + Residual volume |
Choose the correct answer from the options given below:
Options
A.A-II, B-I, C-IV, D-III
B.A-I, B-III, C-II, D-IV
C.A-II, B-IV, C-I, D-III
D.A-III, B-II, C-IV, D-I
Solution
Sol. [Key Concept: Lung volumes and capacities]
Expiratory capacity = TV + ERV (A–II). Functional residual capacity = ERV + RV (B–IV). Vital capacity = IRV + TV + ERV (C–I). Inspiratory capacity = TV + IRV (D–III). TV denotes tidal volume; IRV, ERV and RV denote inspiratory reserve, expiratory reserve and residual volume. Hence, option (3).
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