The amount of air collected at the alveoli is described as which term?

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Multiple Choice

The amount of air collected at the alveoli is described as which term?

The amount of air reaching the alveoli and taking part in gas exchange is alveolar ventilation. It represents the fresh air per minute that actually gets to the alveoli after subtracting the air that remains in the conducting airways (the physiologic dead space). Alveolar ventilation per minute is calculated as (tidal volume minus dead space) times the respiratory rate. This is different from minute ventilation, which is tidal volume times respiratory rate and includes air that does not participate in gas exchange. So, alveolar ventilation tells you how effectively air is delivered to the sites of gas exchange for oxygen uptake and CO2 removal. The other terms describe cardiovascular factors (blood pressure, cardiac output, afterload) and do not quantify air delivery to the alveoli.

The amount of air reaching the alveoli and taking part in gas exchange is alveolar ventilation. It represents the fresh air per minute that actually gets to the alveoli after subtracting the air that remains in the conducting airways (the physiologic dead space). Alveolar ventilation per minute is calculated as (tidal volume minus dead space) times the respiratory rate. This is different from minute ventilation, which is tidal volume times respiratory rate and includes air that does not participate in gas exchange. So, alveolar ventilation tells you how effectively air is delivered to the sites of gas exchange for oxygen uptake and CO2 removal. The other terms describe cardiovascular factors (blood pressure, cardiac output, afterload) and do not quantify air delivery to the alveoli.

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