2004 - BME 403 Respiratory Section Exam Sample 1. Mark True...

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BME 403 Respiratory Section Exam Sample 1. Mark True (T) or False (F) 2 points each, 40 points total 1.1 (F ) Hypoxia leads to vasodilation of the pulmonary circulation. 1.2 (T ) Mean pulmonary arterial pressure is about 15 mm Hg. 1.3 (T ) Large wandering cells called macrophages engulf foreign particles that deposit in the alveoli. 1.4 (F ) The volume of gas in the lung after a normal expiration is the residual volume. 1.5 (T ) The body plethysmograph measures the total volume of gas in the lungs including any that is trapped behind closed airways. 1.6 (T ) Alveolar ventilation represents the difference between minute ventilation and dead space ventilation. 1.7 (F ) In the upright position upper zones of the lungs ventilate better than lower reqions. 1.8 (T ) Immersion in water up to the neck should remove the effect of a pleural pressure gradient on lung gas exchange. 1.9 (T ) In the upright position (in air) blood flow is higher in lower regions of the lungs rather than upper zones. 1.10 (T ) Normal lungs inflated with air are stiffer than when inflated with saline. 1.11 (F ) If lungs can be modeled as two capacitors(compliances) in parallel a flow directed into their common connection will preferentially go to the lower capacitance. 1.12 (T ) Increasing ventilation perfusion ratio in an individual alveolus should lead to a lower PCO2 and higher PO2. 1.13
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2004 - BME 403 Respiratory Section Exam Sample 1. Mark True...

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