This means that 4.2 liters of air reach the alveoli per minute, which indicates the efficiency of gas exchange in the lungs. By substituting the given values in the formula, we get the Alveolar Ventilation Rate as 4.2 L/min. Using the formula for Alveolar Ventilation Rate, we can calculate the volume of air that reaches the alveoli per minute. The Breathing Rate is given as 12/min, which means that the person takes 12 breaths per minute. The Dead Space Volume is given as 150 ml, which means that 150 ml of air remains in the conducting airways and does not participate in gas exchange. In this question, the Tidal Volume is given as 500 ml, which means that with each breath, the person inhales and exhales 500 ml of air. It depends on the tidal volume (the volume of air inhaled and exhaled with each breath), the dead space volume (the volume of air that remains in the conducting airways and does not participate in gas exchange), and the breathing rate (the number of breaths per minute). It is a measure of the efficiency of gas exchange in the lungs. Therefore, the correct option is B) 4.2 L/min.Īlveolar Ventilation Rate is the volume of air that reaches the alveoli (tiny air sacs) in the lungs per minute. Substituting the given values in the above formula, we get:Īlveolar Ventilation Rate = (500 ml - 150 ml) x 12/minĪlveolar Ventilation Rate = 350 ml x 12/minĪlveolar Ventilation Rate = 4200 ml/min or 4.2 L/min Alveolar Ventilation Rate can be calculated using the following formula:Īlveolar Ventilation Rate = (Tidal Volume - Dead Space Volume) x Breathing Rate
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