General questions Flashcards
1
Q
What is homeostasis?
A
Stable equilibrium maintained by physiological processes
2
Q
What is alleostasis?
A
The process of achieving homeostasis through physiological or behavioural change
3
Q
What is allostatic load?
A
- Accumulated lifetime stress
- “Wear and tear of the body” McEwan & Stellar (1993)
- When alleostatic systems become imbalanced
4
Q
What are the 3 types of allostatic load?
A
Allostatic systems become:
- overworked
- fail to shut off
- fail to respond
5
Q
What is the definition of psychosocial stress?
A
When demands imposed by events exceed an individual’s ability to cope
6
Q
What are the 4 stressor characteristics?
A
- Unpredictable
- Uncontrollable
- Social evaluative threat
- Time pressure
7
Q
Explain the Th1/Th2 immune repsonse
A
Th1 responses = intracellular immune response (within cell)
Th2 repsonses = extracellular immune response
Ideally need a balance (outside cell)
