10. Systemic arterial PCO2is ____ while pulmonary venous PO2is . A) 40 mm Hg; 46 mm Hg B) 46 mm Hg; 40 mm Hg C) 46 mm Hg; 100 mm Hg D) 100 mm Hg; 40 mm Hg E) 40 mm Hg; 100 mm Hg 11. Which factor would reduce the alveolar ventilation rate the most? A) Increased alveolar 12. The vital capacity is 13.When the level of blood flow is not ideally matched with the amount of airflow in a localized area of lung tissue, 14. A transpulmonary pressure gradient exists across the lung wall because the ____ pressure is less than the ____ pressure. A) alveolar; intrapleural B) intrapleural; alveolar C) intrapleural; atmospheric D) atmospheric; alveolar E) atmospheric; intrapleural 15. When inspiratory neurons stop firing, the expiratory muscles will contract. A) True B)
16. Which factor would result in bronchoconstriction? A) Sympathetic stimulation 17. Under normal conditions, when _______ pressure becomes greater than _______ pressure, air will flow out of the lungs. 18. The peritubular capillaries . A) supply nutrients and O2to the tubular cells B) take up the substances that are reabsorbed by the tubules C) supply substances that are secreted by the tubules D) B & C E) A, B & C 19. Filtrate passes through all of the following except 20. Which factor would reduce the net filtration pressure the most? A) Vasodilation of the
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- Fall '08
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