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7 Cards in this Set
- Front
- Back
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General Adaptation Syndrome
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Selye –
Adrenal cortex enlargement Thymic gland atrophy Bleeding gastric ulcers Three stage of GAS Alarm stage Stage of adaptation Stage of exhaustion (remember: thymus regulates immunity) |
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Alarm Stage
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Fight or Flight
stimulation of the sympathetic nervous system: Catecholamines Epinephrine Norepinephrine Cortisol |
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Adaptation Stage
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body selects the most effective and economic channels of defense
The cortical levels begin to drop |
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Exhaustion Stage
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Body is overwhelmed, resources are depleted
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Catecholamines
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Epinephrine and Norepinephrine
Stimulates Alpha and Beta adrenaleric receptors |
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Cortisol
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A steroid, maintains blood glucose levels
Osteoblast activity (fractures) Hematopoiesis (Stimulates blood cell production) Protein and collagen syntheses Immune response (depressess both T and B cell activity) Decrease inflammatory response Stops adrenal gland function, leads to Cushin’s disease |
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Hallmarks of stress
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increased corticosteroid production
Atrophy of thymus |
