Physiology Of Stress GAS Flashcards
(34 cards)
What is stress?
Stress is how our body reacts when we are feeling under pressure or threatened in some way.
Stress can be both positive and negative, affecting physical and mental health.
How can stress be defined according to Sarafino (2006)?
Stress can be defined in three ways:
* The effect of the environment on the individual
* Stress as a bodily response
* The interaction between the person and the environment
What is the first way stress is defined according to Sarafino (2006)?
The effect of the environment on the individual, for example, major life events or chronic stressors.
Examples include living in poverty or inadequate housing.
What is the second way stress is defined according to Sarafino (2006)?
Stress as a bodily response focusing on how people respond to stressful events.
What is the third way stress is defined according to Sarafino (2006)?
The interaction between the person and the environment, where individuals can choose how to respond to the stressor.
What is the General Adaptation Syndrome (GAS)?
The General Adaptation Syndrome was developed by Hans Seyle and describes the effect of prolonged stress on the body.
What are the three stages of the General Adaptation Syndrome?
The three stages are:
* Alarm stage
* Resistance stage
* Exhaustion stage
What happens during the alarm stage of the General Adaptation Syndrome?
The body prepares for a flight or fight response after the amygdala is alerted.
Which part of the brain is alerted during the alarm stage?
The amygdala.
What does the hypothalamus activate during the alarm stage?
The hypothalamus activates the sympathetic nervous system.
What hormones are released during the alarm stage of the General Adaptation Syndrome?
Hormones released by the adrenal medulla.
Fill in the blank: Stress can be _______ as it can help motivate us to do things.
positive
True or False: Too much stress can affect our physical and mental health.
True
What hormones are released during the alarm stage of stress?
Epinephrine and norepinephrine
The hypothalamus signals the pituitary gland to release ACTH, stimulating cortisol production.
What does the alarm stage prepare the body for?
To meet the challenge posed by a stressor or emergency
This is commonly referred to as the ‘fight or flight’ response.
What is the resistance stage in response to stress?
The body tries to adapt to ongoing demands of stress
This occurs around 48 hours after the onset of stress.
What happens to hormone levels during the resistance stage?
Higher-than-normal levels of epinephrine, norepinephrine, and cortisol continue to circulate
This is an attempt to remain alert despite stress.
What is apparent coping?
The individual may not show outward signs of stress but struggles to respond to new stressors
This occurs during the resistance stage.
What illnesses may individuals become susceptible to during the resistance stage?
- Ulcers
- High blood pressure
These can result from prolonged stress.
What occurs during the exhaustion stage of stress?
The body depletes resources needed for prolonged arousal
This results in a weakened immune system.
What are the consequences of continued stress during the exhaustion stage?
Increased likelihood of illness and physiological damage
The body cannot maintain prolonged physical arousal indefinitely.
What is the evolutionary purpose of the fight or flight response?
To protect from danger in the environment
Example: Avoiding a tiger outside a cave.
What modern scenarios can trigger the fight or flight response?
- Upcoming exams
- Job loss
- Caring for a relative with a long-term health condition
These stressors may not be easily avoided or are long-term.
What does GAS stand for?
General Adaptation Syndrome
GAS is a theory that explains the body’s response to stress.