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

(a) (i) Incorrect, (ii) incorrect, (iii) incorrect, (iv) Correct

(b) (i) Incorrect, (ii) Correct, (iii) incorrect, (iv) Correct

(c) (i) Correct, (ii) Correct, (iii) Incorrect, (iv) Correct

(d) (i) Correct, (ii) Incorrect, (iii) Correct, (iv) Incorrect

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Solution

(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) Volume of air inspired of expired during a normal respiration.

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Similar questions

I	Inspiratory Capacity (IC)
II	Functional Residual Capacity (FRC)
III	Vital Capacity (VC)
IV	Inspiratory Reserve Volume (IRV)
V	Residual Volume RV)
VI	Expiratory Reserve Volume (ERV)
VII	Tidal Volume (TV)

Arrange the following in the order of increasing volume.
(I) Tidal volume (II) Residual volume
(III) Inspiratory reserve volume (IV) Vital capacity

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