How will hypoxia affect the pulmonary capillary bed and pulmonary vascular resistance?
A. The pulmonary vascular bed constricts and pulmonary vascular resistance decreases
B. The pulmonary vascular bed dilates and pulmonary vascular resistance falls
C. The pulmonary vascular bed constricts but the pulmonary vascular resistance does not change
D. The pulmonary capillary bed constricts and pulmonary vascular resistance increases
Answer: D
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