An Area of the Lung Has No Ventilation but Is $\dot { V }$

question 70

Multiple Choice

An area of the lung has no ventilation but is normally perfused by the pulmonary circulation. Which of the following statements are correct?
I .Blood exiting the pulmonary capillary will have a PO₂ = 40 and a PCO₂ = 46.
II.The area represents an alveolar shunt.
III.The $\dot { V }$ / $\dot { Q }$ is 0.

• A)II and III
• B)I and III
• C)II only
• D)I, II, and III

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