Spring'09.Final.B

Spring'09.Final.B - BIPN 102 B, Mammalian Physiology II...

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BIPN 102 B, Mammalian Physiology II FINAL EXAM June 8, 2009 “Ignorance is a curable condition!” SELECT THE SINGLE BEST ANSWER 1. Consider the following steps of inspiration. Put them in order 1. air flows in 2. volume of the thorax increases 3. alveolar pressure decreases 4. alveolar volume increases 5. transpulmonary pressure increases a. 4, 5, 3, 2, 1 b. 2, 5, 4, 3, 1 c. 3, 5, 4, 2 ,1 d. 2, 5, 4, 3, 1 e. 2, 3, 5, 4, 1 2. Your roommate, a heavy smoker, coughs during lectures, concerts, movies, and parties. Otherwise there don’t seem to be any problems during dances, hikes, sports, etc. The most likely cause is: a. COPD (Chronic Obstructive Pulmonary Disease) b. Paralysis of the cilia in the lower respiratory tract c. Emphysema d. Pulmonary fibrosis e. Asthma For questions 3 &4 indicate which of the following muscles will contract. I. External Intercostals II. Internal Intercostals III. Diaphragm IV. Abdominal Muscles V. Sternocleidomastoids VI. Scalenes 3. Resting tidal expiration: a. I, III b. II, III c. II, IV d. I, III, V, VI e. No muscles contract 4. Forced inspiration: a. I, III b. II, III c. II, IV d. I, III, V, VI e. No muscles contract 5. Which of the following should NOT occur during any of the normal respiratory cycles: a. P IP > P ATM b. P IP > P A c. P IP < P ATM d. P A = P ATM e. P A > P ATM
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BIPN 102 B, Mammalian Physiology II FINAL EXAM June 8, 2009 6. It’s your birthday and you are about to blow out the candles on your cake. Which of the following pairs of values (in mm Hg) is correct for the air in your trachea just before you blow out the candles? 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 increase the: A. alveolar surface tension B. alveolar compliance C. alveolar volume D. alveolar pressure E. alveolar surface area 8. What is the PO 2 of inspired air in a person at an altitude where Patm = 400 mmHg, the diet is mostly carbohydrates, and the PCO 2 is equal to that at sea level? a. 34 mmHg b. 44 mmHg c. 63 mmHg d. 74 mmHg e. 110 mmHg 9. What is the PO 2 in the alveoli of the above person? a. 34 mmHg b. 44 mmHg c. 63 mmHg d. 74 mmHg e. 110 mmHg 10. If the alveolar ventilation is 4200 ml/min of an individual that has a ventilation rate of 20 breaths/min, and normal dead space, what must the tidal volume be? a. 210 ml b. 360 ml c. 500 ml d. 710 ml e. more information is needed 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 ? a.
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This note was uploaded on 01/11/2011 for the course BIPN 102 taught by Professor Nefzi during the Spring '06 term at UCSD.

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Spring'09.Final.B - BIPN 102 B, Mammalian Physiology II...

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