NUR 529 - Exam 1 (Stress and Adaptation) Questions and Correct Answers
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Course
NUR 529
Institution
NUR 529
General Adaptation Syndrome (GAS) Selye's concept of the body's adaptive response to stress in three phases—alarm, resistance, exhaustion.
Alarm stage of GAS A generalized stimulation of the sympathetic nervous system and the HPA axis resulting in release of catecholamines and cortisol
Resistan...
NUR 529 - Exam 1 (Stress and
Adaptation) Questions and Correct
Answers
General Adaptation Syndrome (GAS) ✅Selye's concept of the body's adaptive
response to stress in three phases—alarm, resistance, exhaustion.
Alarm stage of GAS ✅A generalized stimulation of the sympathetic nervous system
and the HPA axis resulting in release of catecholamines and cortisol
Resistance stage of GAS ✅The body selects the most effective and economic
channels of defense
Increased cortisol levels from stage 1 drop bc they are no longer needed
Exhaustion stage of GAS ✅occurs if stressor is prolonged or overwhelms the ability of
body to defend itself
Resources are depleted and signs of wear and tear or systemic damage appear
(headaches, insomnia, upset stomach, gastric and duodenal ulcers, rheumatic
disorders, CV and kidney disease)
What two systems cause manifestations of the stress response? ✅nervous and
endocrine systems
Catecholamines (released by) ✅NE, E - released by LC (locus coeruleus, a small
brainstem nucleus), adrenal medulla
Effects of catecholamines ✅decrease in insulin release
Increase in glucagon (increased glycogenolysis, lipolysis, proteolysis, decreased
glucose uptake by peripheral tissues)
Increased HR
Cardiac contractility
Vascular smooth muscle contraction
Relaxation of bronchiole smooth muscle
Corticotropin-releasing hormone (CRH) - released by ✅hypothalamus
Effects of corticotropin-releasing hormone ✅stimulates ACTH (adrenocorticotropic
hormone) release from anterior pituitary and increased activity of LC (locus coeruleus, a
small brainstem nucleus) neurons
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