Which of the following statements are correct with respect to vital capacity?
(a) It includes ERV, TV and IRV
(b) Total volume of air a person can inspire after a normal expiration.
(c) The maximum volume of air a person can breathe in after forced expiration.
(d) It includes ERV, RV and IRV.
(e) The maximum volume of air a person can breath out after a forced inspiration.
Choose the most appropriate answer from the options given below :
- A(a) and (e)
- B(b), (d) and (e)
- C(a), (c) and (d)
- D(a), (c) and (e)
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Correct answer: D
Option (d) is the correct answer because statements (a), (c) and (e) are correct.
Vital capacity includes ERV, TV and IRV.
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.
Statement (b) is incorrect as total volume of air a person can inspire after a normal expiration is termed as inspiratory capacity (IC).
Statement (d) is incorrect as ERV, RV, IRV and TV comprise total lung capacity.
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