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The Pulmonary Vascular System

Question 27
Multiple Choice

The pulmonary vascular system A) has no or receptors. B) has no parasympathetic innervation. C) responds to norepinephrine with vasoconstriction. D) has very low compliance.

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Q 28
In the lateral decubitus position A) perfusion is greater in the dependent lung. B) perfusion is greater in the upper lung. C) ventilation is greatest at the apex. D) distribution of ventilation and perfusion are the same as in the upright lung.
Q 29
Intrapulmonary shunting refers to A) anatomic dead space. B) alveolar dead space. C) ventilation without perfusion. D) perfusion without ventilation.
Q 30
As one moves from the apex of the lung to the dependent areas A) the alveoli become larger. B) pleural pressure becomes more negative. C) compliance becomes greater. D) alveolar ventilation decreases.
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