MOVE CURSOR OVER ANSWERS: DO NOT CLICK MOUSE

1. Another name for the conducting zone of the lung is:

A. Pulmonary circulation B. Respiratory zone C. Anatomical dead space D. None of the above

2. Dry atmospheric air has what percent oxygen?

A. 79.03% B. 0.03% C. 10.39% D. 20.93%

3. Volume of air ventilated into and out of the lung with each breath?

A. Tidal volume B. Residual volume C. Vital capacity D. Inspiratory capacity

4. Metabolic intensity associated with increase in ventilatory equivalent for oxygen?

A. Lactate threshold B. Anaerobic threshold C. Ventilatory threshold D. Gycolytic threshold

5. Do the ventilaton muscles fatigue during max exercise with endurance-trained persons?

A. Yes B. Unclear C. No D. Only when the upper body is submerged

6. Which of the following is true about asthma?

A. The airway obstruction is irreversible B. Airway inflammation is not present C. Decreased airway responsiveness to a variety of stimuli D. Obstruction is reversible; inflamation is present; increased responsiveness

7. What enzyme catylyzes conversion of CO2 to carbonic acid?

A. 2.3 DPG B. Carbaminohemoglobin C. Bicarbonate D. Carbonic anhydrase

8. A given hemoglobin molecule can bind how many oxygen molecules?

A. 4 B. 6 C. 8 D. 10

9. Effects of temperature, pH, and PCO2 on oxy-hemoglobin dissociation curve?

A. Haldane effect B. Bohr effect C. Daltons law D. Boyles law

10. Term used when the four heme groups of hemoglobin are all binding oxygen?

A. Unloaded B. At equilibrium C. Saturated D. None of the above

11. Second messenger produced by the activation of adenylate cyclase:

A. Apocrine B. cyclic AMP C. Eccrine D.Amine

12. Predominant glucose transporter protein on sarcolemma of muscle fiber:

A. Glucagon B. Insulin C. GLUT4 D. GLUT2

13. Steroid hormones are hydrophobic which means:

A. Soluble in water B. Transported in water C. Insoluble in water D. They cannot pass through the cell membrane

14. What is the most common type of diabetes?

A. Type I B. Type II C. Juvenile-onset D. Insulin dependent

15. If blood plasma decreases, what happens to plasma osmolality?

A. Decreases B. Stays the same C. Fluctuates up and down D. Increases

16. What is the substance found on the alveolar membranes that functions to decrease surface tension and improve compliance

A. Water vapor B. Epithelium C. Surfactant D. Sodium bocarbonate

17. How many alveoli are in your lungs?

A. 3000 B. 30,000 C. 300,000 D. 300 million

18. What is the maximal amount of air that can be exhaled from the lungs?

A. Tidal volume B. Residual volume C. Vital capacity D. Inspiratory capacity

19. How is the majority of carbon dioxide transported in the blood?

A. Reacts with water to form carbonic acid B. Dissolves in the plasma C. Forms carbaminohemoglobin D. Is transported as bicarbonate

20. Exercise induced bronchoconstriction (asthma) usually occurs when?

A. First few minutes of exercise B. About 15 minutes in exercise C. About 5 to 10 minutes after exercise D. 30 minutes after exercise

Complete!