Vital capacity of lungs is

IRV + ERV

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IRV + ERV + TV - RV

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IRV + ERV + TV + RV

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IRV + ERV + TV.

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Solution

The correct option is D IRV + ERV + TV.
Vital capacity is the maximum volume of air a person can breathe in after a forced expiration or the maximum volume of air a person can breathe out after a forced inspiration.This equals the inspiratory reserve volume (IRV) + expiratory reserve volume (ERV) + tidal volume (TV). Its value is 3400 mL - 4800 mL.

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Similar questions

Complete the following blanks, regarding lung volumes and capacities.
i. First lung capacity (FRC) $⟶$ ERV+RV= ________.
ii. Inspiratory capacity (IC) $⟶$ TV+IRV= ________.
iii. Vital capacity (VC) $⟶$ IC+ERV= ________.
iv. Total lung capacity $⟶$ RV+VC= ________.

Q. Match column i with column II and select the correct option from the codes given below.

Column I	Column II
A. TV + ERV	(i) Expiratory capacity
B. RV + ERV + TV + IRV	(ii) Total lung capacity
C. ERV + RV	(iii) Functional residual capacity

Q. Explain the terms: Vital capacity of lungs in terms of IRV (Inspiratory Reserve Volume), ERV (Expiratory Reserve Volume), TV (Tidal Volume) and RV (Residual Volume)

Q. Match the following columns.

Column I	Column II
A. IC B. EC C. FRC D. VC	1. TV and IRV 2. TV and ERV 3. ERV and RV 4. ERV, TV and IRV

Q. The total volume of air accommodated in the lungs at the end of maximum forceful inspiration includes:-

(A)

E R V + R V

(B)

T R V + E R V

(C)

T V + I R V + E R V + R V

(D)

V C + R V

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