AS Psychology- Selye's GAS Model

a description of selye's GAS model.

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Selye's GAS Model.

GAS: General Adaptation Syndrome:

Selye developed a three stage model of how the body responds to stressors:

Stage 1: Alarm:

the body detects the stressor and the SAM pathway is activated. during this stage, the two hormones; adrenaline and noradrenaline are released, which lead to bodily changes; increased heart rate, muscle tension, perspiration, blood rate and a decrease in digestion.

Stage 2: in this stage, the HPA axis is activated, which releases CRH and ACTH.

Stage 3: the body can no longer cope with the demands of the situation/stressor. high levels of stress hormone and the increase becomes likely.

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