ch. 4&5 Tabythia Lee 7
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tabythiacl on October 5, 2009
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19 terms
Terms | Definitions |
|---|---|
 stress | the effect of physical and psychological demands on a person. Stress that provides a welcome challenge is eustress. |
| chronic stress | unrelieved stress that continues to tax a person's resources to the point of exhaustion; stress that is damaging to health. |
| acute stress | a temporary bout of stress that calls forth alertness or alarm to prompt the person to deal with an event. |
| stressor | a demand placed on the body to adapt |
| adapt | to change or adjust in order to accommodate new conditions |
| perception | a meaning given to an event or occurrence based on a person's previous experience or understanding |
| nervous system | The body system of nervous tissues--organized into the brain,spinal courd, and nerves--that send and receive messages and integreate the body's activities. |
| hormonal system | the system of glands- organs that send and recieve blood-borne chemical messages- that control the body functions in cooperation with the nervous system |
| immune system | the cells, tissues, and organs that protect the body from disease. the immune system is composed of the white blood cells, bone marrow, thymus gland, spleen and other parts |
| hormone | a chemical that serves as a messenger. Each hormone is secreted by a gland and travels to one or more target organs, where it brings about responses. |
| gland | an organ of the body that secretes one or more hormones |
| stress hormones | epinephrine and norepinephrine, secreted as part of the reaction of the nervous system to stress |
| epinephrine norepinephrine | two of the stress hormones; also called adrenaline and noradrenaline. |
| immunity | the body's capacity for identifying, destroying, and disposing of disease-causing agents |
| stress response | the response to a demand or stressor. the stress response has three phases alarm, resistance, and recovery or exhaustion |
| alarm | the first phase of the stress response, in which the person faces a challenge and starts paying attention to it. |
| resistance | The second phase of the stress response, in which the body mobilizes its resources to withstand the effects of the stress. |
| recovery | a healthy third phase of the stress response, in which the body returns to normal |
| exhaustion | A harmful third phase of the stress response, in which stress exceeds the body's ability to recover. |
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