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Vital capacity of lungs is...

Vital capacity of lungs is

A

`IRV + ERV`

B

`IRV + ERV + TV - RV`

C

`IRV + ERV + Tv + RV`

D

`IRV + ERV + TV`.

Text Solution

Verified by Experts

The correct Answer is:
D
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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NCERT FINGERTIPS-BREATHING AND EXCHANGE OF GASES-Breathing And Exchange Of Gases
  1. Consider the following statements each with two blanks. (i) Actual...

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  2. The inspiratory reserve volume + tidal volume + expiratory reserve vol...

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  3. Vital capacity of lungs is

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  4. After forceful inspiration, the amount of air that can be breathed out...

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  5. Match column I with column II and select the correct option from the g...

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  6. Match column I with column II and select the correct option from the c...

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  7. Consider the following four statements (I - iv) and select the correct...

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  8. The exchange of gases in the alveoli of the lungs takes place by

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  9. The given figure shows the diagrammatic represtation of exchange of ga...

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  10. Consider the following statement each with two blanks. (i) Diaphragm...

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  11. Which of the following would have the same O(2) content?

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  12. What is the approximate normal composition of alveolar air ?

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  13. The CO(2) content by volume, in the atmospheric air is about

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  14. Among the following the partial pressure of oxygen is maximum in

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  15. In lungs, the air is separated from the venous blood through

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  16. The factor which does not affect the rate of alveolar diffusion is

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  17. Besides RBC, blood plasma also carries O(2) in solution. The percentag...

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  18. Which of the following statement is correct?

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  19. Which of the following statement is true about RBCs in humans?

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  20. The carbon dioxide is transported via blood to lungs mostly

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