MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It increases
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It decreases
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It gets faster
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It slows down
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Detailed explanation-1: -During physical activity, the number of lung volume receptors and other receptors in respiratory control center increase, which result in higher ventilation rate. Therefore during an exercise initially tidal volume and subsequently breathing rate increase.
Detailed explanation-2: -Increasing respiratory rate or tidal volume will increase minute ventilation. Dead space refers to airway volumes not participating in gas exchange. Anatomic dead space includes air in the mouth, trachea, and all but the smallest bronchioles, usually about 150 mL.
Detailed explanation-3: -Exercise causes an increase in tidal volume because your requirements for oxygen go up.
Detailed explanation-4: -Increasing tidal volume improves oxygenation, whereas a decrease in tidal volume from its normocapnic value causes a rapid decrease in oxygenation during HFOV compared to CV.