Question

Which of the following lung volumes or capacities can be measured by spirometry? (1)Functional residual capacity(FRC) (2)Residual volume(RV) (3)Total lung capacity(TLC) (4)Vital capacity(VC)

Answer 1

Answer:

The correct answer is VITAL CAPACITY

Explanation:

RV, FRC and TLC cannot be estimated by spirometer.

So Vital capacity can only be measure in spirometer.

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Answer 2

Answer:

The forced vital capacity can be measured by spirometry. The correct option is (4)

Explanation:

The forced vital capacity is measured by spirometry.

• Functional residual capacity (FRC): The volume of air that will remain in the lungs after a normal expiration. This includes expiratory reserve volume and residual volume.
• Residual volume (RV): The volume of air remaining in the lungs even after a forceful expiration.
• Total lung capacity (TLC): Total volume of air accommodated in the lungs at the end of forced inspiration.
• Vital capacity (VC): The maximum volume of air a person can breathe in after forced expiration.

FRC, RV, and TLC are cannot be measured by spirometry. Only the forced vital capacity can be measured by spirometry.

Hence, the correct option is (4)