Physiological psychology selyes gas essay

He conducted hormone experiments on rats and noticed a generalized response.

Physiological psychology selyes gas essay

Working in the laboratory with rats and later in hospital with humans, Selye formulated his three stage theory of the stress response which we have come to know as the General Adaptation Syndrome.

This, in turn releases ACTH Adrenocorticotrophic hormone which acts upon the adrenal cortex to produce corticosteroids fats sugars and acids for energy mobilisation The second Axis is known as the Hypothalamic ANS Axis. ANS is the autonomic nervous system and this sends signals to the adrenal medulla to produce adrenaline increases the heart rate and blood pressure and noradrenaline which constricts the arteries.

1) During the Physical stage (first hours) all stimuli produced the same physiological tread, – Enlargement of the adrenal glands. Ulcers In the digestive system. – Shrinking of the immune system. General adaptation syndrome (GAS) is the predictable way the body responds to stress as described by Hans Selye (). Learn more about the three stages of general adaptation syndrome and. Hans Selye (), brought together the work of Cannon and Bernard and devised a comprehensive system of physiological stress; which he termed the ‘General Adaptation Syndrome’, and is .

The individual is now in a state of stress fight or flight In the resistance phase, all non necessary functioning, shuts down.

Growth hormone ceases to be produced and the immune system shuts down temporarily, in order to divert all resources to the stress response Exhaustion.

However there are at least 3 separate problems Ethical objections: Selye subjected the rats to horrific forms of treatment including, exposure to extreme and rapidly altered temperatures, heavy exercise, surgical injury and sub lethal doses of drugs.

Physiological psychology selyes gas essay

Such treatment would be regarded as unethical today and a licence would be required under the Scientific Procedures Act Absence of psychological factors: The GAS suggests that human responses to stressors are singular, uniform and passive.

Mason has argued that when we are confronted with a stressor, individuals make an assessment or appraisal of the situation.

This helps determine the bodily response to a stressor and has been lent some support from the work of Symington et al The GAS assumes a neat progression from alarm, through resistance to exhaustion, thus implying a non adaptive response to the stressor as the most likely outcome.

The GAS would be improved if it took into account the possibility of adaptive responses to stressors, leading through to parasympathetic activity and homeostasis. Atherosclerosis Strokes or Haemorrhages Sympathetic arousal results in the stimulation of the adrenal cortex which in turn secretes corticosteroids.

Collectively the fats, sugars and acids mobilise energy throughout the bloodstream which if not utilised may be reabsorbed.

Selyes General Adaptation syndrome (GAS) theory focuses on how the body respond to stress. Selyes research on rats led him to conclude that when exposed to stressful situations we display a universal response to all stressors regardless. He called this General Adaptation Syndrome. Selyes GAS theory consists of 3 stages; alarm reaction stage, resistance stage and exhaustion stage. Statoil is a fully integrated oil and gas company operating in industry segments such as the production and refining of petroleum, natural gas, and petrochemicals. Crude oil is the largest segment of the global oil and gas market, accounting for % of the markets total volume. All in all, the General Adaptation Syndrome model by Hans Selye presents a clear biological explanation of how the body responds and adapts to stress. Check out our quiz-page with tests about: Psychology .

This contributes to the furring up of the arteries, hypertension, atherosclerosis and haemorrhages. Hypertension High blood pressure Psychologists have identified a clear link between hypertension and stress.

Hypertension may be caused by a number of risk factors including diet, alcohol or caffeine consumption, smoking, lack of exercise, genetics and psycho-social factors such as personality type. Despite these causal factors Cobb and Rose noted a clear relationship between occupational stress and hypertension in air-line pilots and air traffic controllers.

Immuno-suppression Immune system shuts down Sympathetic arousal has been shown to dampen immune function. When our immune systems shut down in a state of stress this is called immunosupression. Prolonged or repeated exposure to stress results in inhibited leucocyte and lymphocite production.

These are responsible for creating antibodies and antigens which attack viruses and infections. Numerous investigations with both laboratory animals and human participants have revealed that stress suppresses the immune system.

The mice in the high stress condition went on the develop tumours whereas the no stress group did not.

1 b) LONGER TERM PHSYIOLOGICAL RESPONSES TO A STRESSOR

There was a clear difference between the two groups in terms of lymphocite production. There are also a range of T-cells which perform various functions in relation to viruses, bacteria and other infectious agents.

Corticosteroids are known to suppress immune functioning leading to inhibited T-cell production.Hans Selye (), brought together the work of Cannon and Bernard and devised a comprehensive system of physiological stress; which he termed the ‘General Adaptation Syndrome’, and is .

Selyes General Adaptation syndrome (GAS) theory focuses on how the body respond to stress. Selyes research on rats led him to conclude that when exposed to stressful situations we display a universal response to all stressors regardless.

He called this General Adaptation Syndrome. Selyes GAS theory consists of 3 stages; alarm reaction stage, resistance stage and exhaustion stage. General adaptation syndrome (GAS) is the predictable way the body responds to stress as described by Hans Selye ().

Learn more about the three stages of general adaptation syndrome and. Seyle termed this collection of responses general adaptation syndrome (GAS), a 3-stage set of physiological processes which prepare, or adapt, the body for danger so that we ready to stand a better chance of surviving it compared to if we remained passively relaxed when faced with a threat.

Statoil is a fully integrated oil and gas company operating in industry segments such as the production and refining of petroleum, natural gas, and petrochemicals. Crude oil is the largest segment of the global oil and gas market, accounting for % of the markets total volume.

1) During the Physical stage (first hours) all stimuli produced the same physiological tread, – Enlargement of the adrenal glands. Ulcers In the digestive system.

Physiological psychology selyes gas essay

– Shrinking of the immune system.

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