Question

1. cardiovascular fitness uses which of the following body systems? a. circulatory and digestive b. circulatory and respiratory c. digestive and respiratory d. respiratory and muscular 13. the number - one killer in the united states is a. cancer. b. car accidents. c. cardiovascular disease. d. smoking. 14. which of the following is an example of anaerobic exercises? a. 100 - yard dash b. bicycling c. racquetball d. soccer 15. when you increase the pace of your run, you are increasing: a. frequency b. intensity c. time d. none of the above 16. in order for jogging to contribute toward the development of cardiovascular fitness, your target heart rate must be maintained for at least a. 3 minutes. b. 5 minutes. c. 10 minutes. d. 30 minutes. 17. blood flow in the body follows the pattern of a. heart to arteries to capillaries to veins. b. heart to arteries to veins to capillaries. c. heart to veins to arteries to capillaries. d. veins to capillaries to heart to arteries. 18. your friend, who is age 15, wishes to start a jogging program. using a percentage of maximal heart rate, what would you suggest as a proper starting target heart rate? a. 123 b. 146 c. 155 d. 178

Explanation:

1. Cardiovascular fitness involves the circulatory system for blood - flow and the respiratory system for oxygen exchange.
2. Cardiovascular disease is a leading cause of death in the United States.
3. A 100 - yard dash is a short - burst activity, an anaerobic exercise.
4. Increasing the pace of a run means increasing its intensity.
5. For jogging to contribute to cardiovascular fitness, the target heart rate should be maintained for at least 10 minutes.
6. Blood flow starts from the heart, goes to arteries, then to capillaries, and finally to veins.
7. For a 15 - year - old starting a jogging program, a reasonable starting target heart rate is around 146 beats per minute.

Answer:

1. B. circulatory and respiratory
2. C. cardiovascular disease
3. A. 100 - yard dash
4. B. intensity
5. C. 10 minutes
6. A. heart to arteries to capillaries to veins
7. B. 146