Explain the General Adaptation Syndrome (GAS) using an appropriate illustration.
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Explain the General Adaptation Syndrome (GAS) using an appropriate illustration.
The General Adaptation Syndrome (GAS) is a concept developed by Hans Selye to describe the body's response to stress. It consists of three stages: the Alarm Stage, the Resistance Stage, and the Exhaustion Stage.
1. Alarm Stage: In this initial stage, the body recognizes a stressor, and the sympathetic nervous system is activated. This triggers the "fight or flight" response, where the body prepares to confront or flee from the stressor. Physiological changes, such as increased heart rate and heightened alertness, occur during this stage.
2. Resistance Stage: If the stressor persists, the body enters the Resistance Stage. During this phase, the body attempts to adapt to the ongoing stress by stabilizing its physiological processes. Hormones like cortisol are released to provide sustained energy, and the body focuses its resources on dealing with the stressor.
3. Exhaustion Stage: Prolonged exposure to the stressor can lead to the Exhaustion Stage. At this point, the body's resources become depleted, and its ability to cope with stress diminishes. Physical and mental health may deteriorate, making individuals more susceptible to illnesses and diseases.