EXAM-2009S-4

EXAM-2009S-4 - Examination IV VPHY 3100 Elements of...

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Examination IV VPHY 3100 Elements of Physiology April 30, 2009 1:25 - 2:15 p.m. Multiple Choice (2.5% each) Choose the single best answer 1. Basic rhythm of breathing is induced by the: A. cerebrum. B. cerebellum. C. *medulla oblongata. D. pontine centers. 2. Emphysema is most likely to be caused by: A. allergy. B. COPD. C. surfactant insufficiency. D. *cigarette smoking. 3. Which of the following statements about the pulmonary surfactant is correct? A. *In the presence of pulmonary surfactant, the surface tension is decreased at the same time that its radius is reduced. B. In the presence of pulmonary surfactant, the pressure in a smaller alveolus would be greater than a larger alveolus. C. Pulmonary surfactant consists of steroids and proteins. D. Pulmonary surfactant is secreted by the epithelial cells of conducting airways. 4. As to the binding affinity to O 2 : A. hemoglobin F > hemoglobin A > myoglobin. B. hemoglobin A > hemoglobin F > myoglobin. C. *myoglobin > hemoglobin F > hemoglobin A. D. myoglobin > hemoglobin A > hemoglobin F. 5. During inspiration, there is increase in: a. chest volume b. intrapleural space volume c. intrapleural pressure d. intrapulmonary pressure A. a only. B. C. c only. D. E. 6. Which of the following statements about the blood pH is true? A. *Metabolic acidosis can be compensated by hyperventilation. B. The pH of systemic arterial blood is lower than the pH of systemic venous blood. C. The pH of blood is increased when there is an increase of both [HCO 3 - ] and [CO 2 ]. D. The pH of blood is increased when there is an decrease of both [HCO 3 - ] and [CO 2 ]. 1
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7. Pulmonary surfactants are produced by: A. Type I alveolar cells. B. *Type II alveolar cells. C. Type III alveolar cells. D. Type IV alveolar cells. 8. The lung vital capacity is equal to: A. *IRV + tidal volume + ERV. B. IC + tidal volume + ERV. C.
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This note was uploaded on 01/17/2010 for the course VPHY 3100 taught by Professor W during the Spring '05 term at UGA.

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EXAM-2009S-4 - Examination IV VPHY 3100 Elements of...

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