Introduction to Stress -- Nakajima Flashcards
Define Stress.
Stimulus (stressor), Response (strain), and Process (interaction between the two)
What are alternative definitions of stress that apply to physical and emotional factors?
A physical or emotional factor that causes bodily or mental tension and may lead to disease causation.
What is physical stress?
A direct physical threat to one’s well-being.
What is psychological stress?
an event that is perceived as negative (not physically threatening)
What normally regulates the physiological response to stress?
Sympathetic-Adrenal-Medulla (SAM) axis and Hypothalamus-Pituitary-Adrenal (HPA) axis
What is the cascade of hormonal release in response to stress in the HPA axis?
Stress –> Corticotropin-Releasing Hormone (CRH) –> Adrenocorticotropic Hormone (ACTH) –> Cortisol –> Immune System, Liver, Muscle Adipose Tissue
What does the Sypathetic-Adrenal Medulla (SAM) axis secrete?
Catecholamines
What does the Hypothalamus-Pituitary-Adrenal Cortex (HPA) axis secrete?
Steroids
What is homeostasis?
The collective process of maintaining the internal physiological stability in the face of environmental change
What is allostasis?
Refinement of Homeostasis is the compensation that an organism engages in to achieve homeostasis successfully
What is te fight-flight response?
Organisms are better equipped to defend themselves in order to better survive and have evolutionary advantage.
What are the three steps of General Adaptation Syndrome?
Alarm Reaction, Adaptation, Exhaustion
What is coping?
The process of managing demands that are appraised as taxing or exceeding the resources of the person, which includes efforts (action-oriented or emotion-focused) to manage environmental demand.
What is the process of coping?
Environmental Event –> Primary Appraisal –> Secondary Appraisal –> Coping Behaviors –> Coping Outcome (Biological, Psychological, Behavioral)
Can stress be good for you?
Stress response is a centrally mediated process to make the organism adaptive to the environmental demand.