An Area of the Lung Has No Ventilation but Is

question 55

Multiple Choice

An area of the lung has no ventilation but is normally perfused by the pulmonary circulation. Which of the following statement(s) is/are correct?
1) Blood exiting the pulmonary capillary will have a PO₂ = 40 and a PCO₂ = 46.
2) The area represents an alveolar shunt.
3) The is 0.

• A)2 and 3 only
• B)1 and 3 only
• C)2 only
• D)1, 2, and 3

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