| Term | Definition |
| stress | the effect of physical and psychological demands |
| chronic stress | unrealived stress that continues to tax the person of their resources |
| acute stress | a temporary bout of stress that calls for alertness |
| stressor | a demand placed on the body to adapt |
| adapt | to change or adjust in order to acommondate new conditions |
| perception | a meaning given to the event |
| nervous system | the body system to of nervous tissue |
| hormonal system | the system of glands |
| immune system | the cells, organs, and tissues that prtect the body fron disease |
| hormone | a chemical that serves as a messanger |
| gland | an organ of the body that secrets one or two hormones |
| stress hormones. | epinephrine and norepinephrine |
| epinephrine and norepinephrine | stress hormones |
| immunity | the bodies capacity for identifying |