What is false about dynamic compression of the

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11. What is false about “dynamic compression of the airways”? a. Flow rate is limited during forced expirations b. Flow becomes independent of effort c. There is a large pressure drop between the alveoli and bronchi during forced expiration d. It increases when elastic fibers are lost e. It aids emphysema patients to breathe more effectively 12. Which of the following responses measured for several seconds after a deep inspiration is false ?
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BIPN 102 B, Mammalian Physiology II FINAL EXAM June 8, 2009 13. Which of the following will cause the largest increase in lung compliance: 14. The tidal volume can never become greater than the 15. The week before finals a BIPN 102 student, otherwise normal, developed acute bronchitis with severe inflammation and edema of the bronchial mucosa and increased mucus secretions that caused a cough. Spirometry test results would have shown normal values, except : a. Increased Functional Residual Capacity b. Decreased FEV 1 /FVC c. Decreased Vital Capacity d. Decreased Inspiratory Reserve Volume e. Decreased Expiratory Reserve Volume 16. The pressure gradient for tidal breathing in the above student was measured to be 16 mm Hg, whereas the normal value is around 1 mm Hg. The effective radius of the airways must have: 17. Which is/are correct about gravity’s effect on the top of the lungs (relative to the bottom) while standing up? I. Ventilation is decreased II. Ventilation/ Perfusion Ratio is decreased III. Perfusion is increased IV. Alveolar compliance is decreased V. P IP is decreased 18. The rate of gas diffusion across the blood-gas barrier is
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BIPN 102 B, Mammalian Physiology II FINAL EXAM June 8, 2009
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