Match the air volumes with their descriptions: (p. 752) (1)...

Match the air volumes with their descriptions: (p. 752) (1) tidal volume A. air that remains after most (2) inspiratory forceful expiration reserve volume B. volume of air, in addition to (3) expiratory resting tidal volume, that can reserve volume enter lungs (4) residual volume C. amount of air that enters and leaves lungs during a respiratory cycle D. volume of air, in addition to resting tidal volume, that can be expelled from the lun

Match the air volumes with their descriptions: (p. 752)
(1) tidal volume
A. air that remains after most
(2) inspiratory forceful expiration
reserve volume
B. volume of air, in addition to
(3) expiratory resting tidal volume, that can reserve volume enter lungs
(4) residual volume
C. amount of air that enters and leaves lungs during a respiratory cycle

D. volume of air, in addition to resting tidal volume, that can be expelled from the lun

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Key Concepts

Residual Volume

Residual volume is the volume of air that remains in the lungs after a maximal forced exhalation. This air prevents lung collapse by maintaining alveolar patency and is crucial for sustaining gas exchange even when the lungs do not fully empty.

Expiratory Reserve Volume

Expiratory reserve volume is the extra volume of air that can be forcefully expelled from the lungs following the end of a normal expiration. It is an important measure of the lung's ability to clear air during active, deep exhalation, and contributes to the overall dynamic capacity of lung ventilation.

Inspiratory Reserve Volume

Inspiratory reserve volume is the additional volume of air that can be forcefully inhaled after a normal inspiration. This volume is beyond the tidal volume and indicates the capacity of the lungs to increase ventilation during periods of increased oxygen demand.

Tidal Volume

Tidal volume is the amount of air that enters and leaves the lungs during a normal, unforced breathing cycle. It represents the basic unit of ventilation and is a key parameter in assessing pulmonary function because it reflects the regular exchange of air in the respiratory cycle.

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