Chapter 8 Vocabulary

4. ability to continue performing a physical activity over time
7. amount of energy the body uses per minute during an activity
9. serious injury in which bones move out of their normal position
10. person’s heart rate
11. serious condition that results when the heat-regulating mechanisms of the body are unable to deal with the heat from the environment, which results in a very high body temperature
13. injury to a ligament
14. serious condition that results when a person’s body loses heat faster than it can produce it
16. broken bone
17. injury caused by the freezing of skin and body tissues

1. activities that consist of sitting or lying down and using very little energy
2. ability to rapidly change the body's momentum and direction
3. physical activity that is structured, planned, and has the purpose of increasing physical fitness
5. powering the body without the use of oxygen
6. using oxygen to break down energy for use in the muscles
8. type of brain injury that results from a blow or jolt to the head or upper body
12. any action in which the body uses energy
15. brain chemicals released during physical activity that improve mood