Ncert Exercises & Solutions

From the following relationships between respiratory volume and capacities, mark the correct option.

i.	Inspiratory Capacity (IC) = Tidal Volume + Residual Volume
ii.	Vital Capacity (VC) = Tidal Volume (TV) + Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV).
iii.	Residual Volume (RV) = Vital Capacity (VC) — Inspiratory Reserve Volume (IRV)
iv.	Tidal Volume (TV) = Inspiratory Capacity (IC) — Inspiratory Reserve Volume (IRV)

Codes
1. (i) Incorrect, (ii) Incorrect, (iii) Incorrect, (iv) Correct
2. (i) Incorrect, (ii) Correct, (iii) Incorrect, (iv) Correct
3. (i) Correct, (ii) Correct, (iii) Incorrect, (iv) Correct
4. (i) Correct, (ii) Incorrect, (iii) Correct, (iv) Incorrect

(b) (i) Inspiratory Capacity (IC) = Tidal Volume+ Inspiratory Reserve Volume (TV + IRV).
(ii) Vital Capacity (VC) Tidal Volume + Inspiratory Reserve Volume + Expiratory
Reserve Volume. (TV+ ERV+ IRV)
(iii) Residual Volume (RV) Volume of air remaining in the lungs after a forcible
expiration.
(iv) Tidal Volume (TV) Volumeofair inspired or expired during a normal respiration.

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