the effect of physical and psychological demands on a person. Stress that provides a welcome challenge is eustress.
unrelieved stress that continues to tax a person's resources to the point of exhaustion; stress that is damaging to health.
a temporary bout of stress that calls forth alertness or alarm to prompt the person to deal with an event.
a demand placed on the body to adapt
to change or adjust in order to accommodate new conditions
a meaning given to an event or occurrence based on a person's previous experience or understanding
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.
the system of glands- organs that send and recieve blood-borne chemical messages- that control the body functions in cooperation with the nervous 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
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.
an organ of the body that secretes one or more hormones
epinephrine and norepinephrine, secreted as part of the reaction of the nervous system to stress
two of the stress hormones; also called adrenaline and noradrenaline.
the body's capacity for identifying, destroying, and disposing of disease-causing agents
the response to a demand or stressor. the stress response has three phases alarm, resistance, and recovery or exhaustion
the first phase of the stress response, in which the person faces a challenge and starts paying attention to it.
The second phase of the stress response, in which the body mobilizes its resources to withstand the effects of the stress.
a healthy third phase of the stress response, in which the body returns to normal
A harmful third phase of the stress response, in which stress exceeds the body's ability to recover.