Spring'09.Final.A

Spring'09.Final.A - BIPN 102 A Mammalian Physiology II...

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BIPN 102 A, Mammalian Physiology II FINAL EXAM June 10, 2009 1 “Ignorance is a curable condition!” SELECT THE SINGLE BEST ANSWER 1. Consider the following steps of expiration. Put them in order 1. air flows out 2. volume of the thorax decreases 3. alveolar pressure increases 4. alveolar volume decreases 5. transpulmonary pressure decreases a. 4, 5, 3, 2, 1 b. 2, 4, 5, 3, 1 c. 2, 3, 4, 5, 1 d. 2, 5, 4, 3, 1 e. 2, 5, 3, 4, 1 2. Which of the following can cause paralysis of the cilia in the lower respiratory tract? a. Heavy city smog b. Breathing very cold air c. Tobacco smoke d. All of the above e. None of the above For each of the following, indicate which muscles will contract. I. External Intercostals II. Internal Intercostals III. Diaphragm IV. Abdominal Muscles V. Sternocleidomastoids VI. Scalenes 3. Resting tidal inspiration: a. I, III b. II, III c. II, IV d. I, III, V, VI e. No muscles contract 4. Forced expiration a. I, III b. II, III c. II, IV d. I, III, V, VI e. No muscles contract 5. Which of the following do you expect to find in a person that has a pneumothorax? a. P A > P IP > P ATM b. P IP < P A = P ATM c. P IP < P ATM d. P IP = P ATM e. P A > P ATM
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BIPN 102 A, Mammalian Physiology II FINAL EXAM June 10, 2009 2 6. It’s your birthday and you are blowing out the candles on your cake. Which of the following pairs of values (in mm Hg) is correct for the air in your trachea when you blow out the last candle ? a. PO 2 = 100, PCO 2 = 40 b. PO 2 = 160, PCO 2 = 0 c. PO 2 = 150, PCO 2 = 0 d. PO 2 = 150, PCO 2 = 40 e. PO 2 = 40, PCO 2 = 46 7. A major function of lung surfactant is to decrease the: A. alveolar surface tension B. alveolar compliance C. alveolar volume D. alveolar thickness E. alveolar surface area 8. What is the PO 2 of inspired air in a person at an altitude where Patm = 500 mmHg, the diet is the normal mixture of carbohydrates, lipids, and protein and the PCO 2 is equal to that at sea level? a. 34 mmHg b. 45 mmHg c. 73 mmHg d. 95 mmHg e. 110 mmHg 9. What is the PO 2 in the alveoli of the above person? a. 34 mmHg b. 45 mmHg c. 73 mmHg d. 95 mmHg e. 110 mmHg 10. If the alveolar ventilation is 4800 ml/min of an individual that has a ventilation rate of 12 breaths/min, and normal dead space, what must the tidal volume be? a. 350 ml b. 400 ml c. 550 ml d. 700 ml e. more information is needed 11. What is/are true 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. All of the above 12. Which of the following responses measured for several seconds after a deep inspiration is false ? a.
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Spring'09.Final.A - BIPN 102 A Mammalian Physiology II...

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