NEET 2008 Biology question

What is vital capacity of our lungs?

(1)Total lungs capacity minus residual volumeCorrect
(2)Inspiratory reserve volume plus tidal volume
(3)Total lungs capacity minus expiratory reserve volume
(4)Inspiratory reserve volume plus expiratory reserve volume

Answer: (1)

Solution

Vital capacity (VC) is the maximum volume of air that can be breathed out after a maximum inspiration: VC = ERV + TV + IRV. Total lung capacity (TLC) = VC + residual volume (RV), so

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Question ID VK-090081