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Physiology

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Respiration

Question
11 out of 15
 

Tidal volume is: (DNB Dec-2009)



A Total vital capacity + RV

B Functional residual capacity - RV

C TLC-RV

D Inspiratory capacity — inspiratory reserve volume

Ans. D Inspiratory capacity — inspiratory reserve volume

  1. The amount of air that moves into the lungs with each inspiration (or that moves out with each expiration) is known as the tidal volume.
  2. The air inspired with a maximal inspiratory effort in excess of the tidal volume is the inspiratory reserve volume.
  3. The volume expelled by an active expiratory effort after passive expiration is the expiratory reserve volume, and the air ‘left’ in the lungs after a maximal expiratory effort is the residual volume.
  4. The space in the conducting zone of the airways occupied by the gas that does not exchange with blood in the pulmonary vessels is the respiratory dead space.
  5. The vital capacity is the largest amount of air that can be expired after a inspiratory effort. The vital capacity equals the inspiratory reserve volume plus the tidal volume plus expiratory reserve volume.

Respiration Flashcard List

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