Tidal volume is best defined as which of the following?

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Multiple Choice

Tidal volume is best defined as which of the following?

Tidal volume is the amount of air moved in and out of the lungs during a normal, quiet breath. This is the portion of air that participates in gas exchange with each breath. It differs from minute ventilation, which is the total air breathed per minute and equals tidal volume multiplied by breathing rate. It also isn’t the air left in the lungs after an expiration (residual volume), nor the air that remains in the conducting airways (anatomic dead space) that doesn’t reach the alveoli. In a typical adult, tidal volume is about 500 mL per breath, with the remainder of inspired air filling these nonexchange areas or the spaces outside the alveoli.

Tidal volume is the amount of air moved in and out of the lungs during a normal, quiet breath. This is the portion of air that participates in gas exchange with each breath. It differs from minute ventilation, which is the total air breathed per minute and equals tidal volume multiplied by breathing rate. It also isn’t the air left in the lungs after an expiration (residual volume), nor the air that remains in the conducting airways (anatomic dead space) that doesn’t reach the alveoli. In a typical adult, tidal volume is about 500 mL per breath, with the remainder of inspired air filling these nonexchange areas or the spaces outside the alveoli.

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