MEDizzy - If an area of the lung is not ventilated because of

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Respiratory Physiology

If an area of the lung is not ventilated because of bronchial obstruction, the pulmonary capillary blood serving that area will have a PO2 that is

ExplanationIf an area of the lung is not ventilated, there can be no gas exchange in that region. The pulmonary capillary blood serving that region will not equilibrate with alveolar PO2 but will have a PO2 equal to that of mixed venous blood.