PSYCH Finals Flashcards
A subfield of psychology is concerned with ways psychological factors influence the causes and treatments of physical illness and maintenance of health?
Health Psychology
A subfield of psychology studies environmental effects on behavior and health?
Environmental Psychology
Specific events or chronic pressures that place demands on a person [that threatens that person’s well-being]
Stressors
A physical and psychological response to internal/external stressors.
Stress
Negative or positive events that cause stress in an individual
Major life changes
Sources of stress that happen continuously or repeatedly
Chronic stressors
_____ causes events to be more stressful because there is nothing that can be done
reduced perceived control
An emotional and physiological reaction to an emergency that increases readiness for an action
Fight-or-flight response
What are the steps to the response of the HPA (hypothalamic-pituitary-adrenocortical) axis?
- Threat triggers brain activation of the hypothalamus
- Stimulates pituitary gland to release ACTH
- ACTH stimulates adrenal glands to release hormones (catecholamines and cortisol)
- Sympathetic NS is activated; Parasympathetic is deactivated
These are hormones released by the adrenal glands as a reaction to stress; epinephrine, norepinephrine, dopamine.
Catecholamines
Hormones that increase the concentration of glucose in blood
Cortisol
A three-stage physiological stress response that appears regardless of the stressor that is encountered (nonspecific stress response)
General Adaptation Syndrome (GAS)
A stage of GAS wherein the body mobilizes resources to respond to the threat (pulls energy from stored fat/muscle)
Alarm
A stage of GAS wherein the body adapts to high arousal state and tries to cope with the stressor (stops digestion, menstruation, growth; continues to draw on body’s resources)
Resistance
A stage of GAS wherein the damage occurs; body becomes susceptible to infection, organ damage, premature aging, death; reserves become depleted
Exhaustion
Caps at the end of chromosomes that aid in cell division
Telomeres
When telomeres are too short, it results in ____.
Tumors and diseases
An enzyme that replenishes telomeres when they get too short or damaged
Telomerase
Name two causes that lead to shorter telomere length and lower telomerase activity
- Chronic stress
2. Cortisol
A complex response system that protects the body from bacteria, viruses, and other body substances
Immune System
They produce antibodies to fight infection
WBC (lymphocytes - T and B cells)
The study of how the immune system responds to psychological variables
Psychoneuroimmunology
What causes hormones to flood the brain, wearing down the immune system and making it less able to fight foreign invaders?
Stressors
How does chronic stress cause heart diseases?
The activation of the SNS causes increases in BP; prolonged BP damages blood vessels. They accumulate more plaque, blocking blood supply and leading to heart attacks