Ex Phys Home
1. For the average individual, total blood volume approximates how many liters?
A. 3
B. 4
C. 5
D. 6
2. Another name for red blood cells is:
A. Leukocytes
B. Erythrocytes
C. Platelets
D. Reticulocytes
3. The average increase in VO2 max from training studies is:
A. 15% to 20%
B. 20% to 30%
C. 5% to 10%
D. 10% to 15%
4. What role does myoglobin play in aerobic exercise?
A. Transport of oxygen in the blood
B. Binds to electrons in the electron transport chain
C. It shuttles the oxygen molecules from the cell membrane to mitochondria
D. Shuttles hydrogens into the TCA cycle
5. The number of particles in a solution.
A. Osmolality
B. Serum ratio
C. Plasma ratio
D. Electrolytes
6. What does ejection fraction mean?
A. The volume of blood left after systole
B. The percent of blood pumped out of the ventricle
C. The volume of blood pumped per beat
D. The volume of blood pumped per minute
7. What does (vascular) compliance mean?
A. Contractility of arteries and arterioles
B. Strength of arteries
C. Limited ability arteries have to distend and increase vascular volume
D. Stretch of all vascular structures
8. What would an average ejection fraction be at rest?
A. 40%
B. 50%
C. 60%
D. 70%
9. SV increases with exercise until what % VO2 max (range) in untrained individuals?
A. 70-90%
B. 90-100%
D. 40-60%
10. This best describes the valsalva maneuver.
A. Forced expiration, increased pressure,elevated arterial pressure (trachea open)
B. Breath holding, increased pressure, elevated arterial pressure (trachea closed)
C. Forced inspiration, increased pressure, elevated arterial pressure (trachea open)
D. Forced expiration, increased pressure, elevated arterial pressure (trachea closed)
11. The oxidation of fat means?
A. An increase in lipid storage
B. The breakdown or burning of fat
C. Increase in fatty acids
D. Decrease in mitochondria function
12. Increased blood flow to muscle immediately following an exercise set?
A. Peripheral hypertrophy
B. Hyperdemia
C. Exercise hyperemia
D. Passive hyperemia
13. Arteriole venous oxygen difference refers to what?
A. Increased hematocrit from increased plasma volume
B. Redistribution of peripheral blood flow
C. Peripheral blood flow
D. Extraction of oxygen from the capillary bed
14. Which has a more linear response to increasing exercise: HR or O2?
A. Heart rate (HR)
B. Oxygen consumption (O2)
C. Varies with fitness level
D. No difference
15. Heart rate monitors transmit a radio signal by a process called?
A. Telemetry
B. Electrocardiography
C. Conduction
D. None of the above
16. Ideally a VO2 max protocol should last how long?
A. 6 to 10 minutes
B. 8 to 12 minutes
C. 10 to 14 minutes
D. 10 to 16 minutes
17. What fiber type would be more associated with increased aerobic capacity?
A. Type IIb
B. Type IIa
C. Type I
D.Type IIc
18. Where does most of the lipid come from that fuels muscle contraction?
A. Mobilization of free fatty acids
B. FFA in plasma
C. Adipose tissue
D. Within contracting skeletal muscle
19. The atrial contraction or ‘Kick’ accounts for what % of ventricular filling?
A. 10%
B. 20%
C. 30%
D. 40%
20. Cardiac output is equal to?
A. Stroke volume times heart rate
C. 25L/Min at rest
D. Ejection fraction
21. Which of the following is NOT a glycolytic enzyme?
A. Phosphorylase
B. Succinate dehydrogenase
C. Phosphofructokinase
D. Lactate dehydrogenase
22. What is the lactate threshold?
A. The concentration of lactate before exercise
B. The concentration of lactate after exercise
C. A physiological marker associatied with skill and coordination
D. A physiological marker that is closely associated with aerobic endurance
23. What does buffering capacity refer to?
A. Enzyme activity in the muscle
B. Speed of hydrolysis of ATP
C. The muscle’s capacity to tolerate the acid that accumulates during glycolysis
D. Dynamic muscle action‘s contraction capability
24. 15 g of hemoglobin are in 100 ml of blood. 1 gram of Hb can combine with 1.34 ml of O2. How much O2 is in 100 ml of blood?
A. 10 ml 02/ 100 ml of blood
B. 20 ml 02/ 100 ml of blood
C. 30 ml 02/ 100 ml of blood
D. 40 ml 02/ 100 ml of blood
25. Mathmatically, which of the following represents the FICK equation?
A. VO2 = Q x a-v O2 difference
B. VO2 = SV x HR x a-v O2 difference
C. VO2 = (EDV-ESV) x HR x a-v O2 difference
D. All of the above