Motohiro: Stress and Coping Flashcards
What is stress?
Stimulus (stressor/event)>
Process (interactions between the two)>
Response (strain)
“A physical or emotional factor that causes bodily or mental tension, and may lead to disease causation”
What is a physical stress?
a DIRECT physical threat to one’s well-being
Ex:
Cold, heat, infection, extended exercise etc.
What is physiological stress?
an event that is PERCEIVED as negative (not physically threatening–> TOP- DOWN)
Ex:
Loss of a loved one
Major personal disappointment
Unemployment
What are the two systems that stress activates in the brain?
The Sympathetic-Adrenal-Medulla (SAM) axis
The Hypothalamus-Pituitary-Adrenal (HPA) axis
What are the two components of SAM and how do they regulate autonomic balance?
Sympathetic–prepares body to respond to emergencies (secretion of EPI/NE from adrenal medulla> increased BP and HR)
Parasympathetic–controls organs under normal conditions (decreases HR)
What does the Hypothalamus release when it’s under stress?
CRH> anterior pituitary> ACTH> adrenal cortex> Cortisol> IS/Liver/Muscle/Adipose> IS suppressed, gluconeogenesis, protein catabolism, lipolysis
SAM activation acts on the adrenal MEDULLA to secrete…
NE and EPI
HPA acts on the adrenal CORTEX to secrete…
steroids (cortisol)
How does cortisol inhibit immune functions?
Decreased macrophage cell ingestion
Decreased IL-1 production by macrophages
What is allostasis?
More focused on active processes to maintain homeostasis
*brain detects non-optimal states and compensates = homeostasis
What is the flight or fight response?
Increases chance of survival
Incorporates powerful EMOTIONAL (anxiety, fear, anger), NEUROENDOCRINE and AUTONOMIC changes to increase chance of survival.
What are the 3 components of General Adaptation Syndrome (GAS)?
- ALARM RXN where the body detects the external stimulus
- ADAPTATION where the body engages in defensive countermeasures against the stressor
- EXHAUSTION where the body begins to run out of defenses (results from long-term exposure to the stress)
* LINKED stress and illness
What is coping?
Dynamic process/internal effort to manage demands that are seen as taxing or exceeding the resources of the person
What are coping behavioral techniques?
Relaxation Cognitive strategies Stress inoculation Exercise Social support Pharmacological interventions (benzos- Cl channel and beta blockers)
Why is stress good for you?
It’s a centrally mediated process to help the organism adapt to the environmental demand
*best at MODERATE levels of stress