Stress
1. What is meant by the term ‘stressor’, ‘immune system’ and ‘cardiovascular disorder’?A stressor is a physical or psychological stimulus which threatens an individual’s psychological and / or physiological well-being. (Something that causes stress, e.g. moving house, a new job, first day of school.) Stressors ca be different for different people, you have to consider an individuals perception of stress, as it will differ from person to person. You also have to look at their ability to cope. The immune system protects the body from disease. It should act like a system, identifying and killing any intruders to the body. It consists of cells distributed throughout the body that fight disease. A simple case: a virus attacks the body. It gets into the bloodstream and circulates the body. The immune system is designed to identify the virus, seek it out, and destroy it. There is increasing evidence that stress can cause illness by impairing the workings of the immune system. The immune system is easily affected by stress. It will lower t
3. Outline three stages of the General Adapt ion Syndrome? The first stage is alarm reaction. This is the stress response; it is adaptive because it prepares the animal for environmental demands. (readiness for fight or flight) This occurs over seconds or minutes in the face of sudden stressor. The heart and blood rate increase and the pituitary glands and hormones are activated. The next stage is resistance. If the stressor persists, the body must adapt by trying to return to a normal level of functioning, whilst coping with the stressor. A high level of arousal is maintained. A prolonged release of corticosteroids reduces the efficiency of the immune system. High sugar levels are also maintained in this phase. The last phase is exhaustion. The body’s resources are depleted and illness is likely. The body’s reserves of energy have been run down. There could possible be enlarged adrenal glands, muscle fatigue, warn out tissues, kidney damage, ulcers and heart damage Cardio vascular disorder refers to illnesses caused by the narrowing of the arte
Some topics in this essay:
Theorell Emlund,
CHD Type,
,
Jacobs Charles,
Disease Post-traumatic,
immune system,
narrowing arteries,
life events,
increase risk chd,
blood pressure,
blood cholesterol,
chd factors,
stress response,
heart blood,
et al,
incidence cancer,
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Approximate Word count = 713
Approximate Pages = 3 (250 words per page double spaced)
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