click below
click below
Normal Size Small Size show me how
stress, coping, ill
patho exam 1
Question | Answer |
---|---|
What is a stressor? | any factor that disturbs homeostasis, producing stress |
What is homeostasis? | maintenance of a constant stable environment within the body |
what is alllostasis? | Is the process of achieving stability, or homeostasis, through physiological or behavioral change |
What did Hans Seyle look at when looking at stress? | only looked at physiological stressors |
What are the three GAS stages of stress? | Alarm, action, exhaustion |
what does the first stage of stress involve? | CNS-CRH (hypothalamus) response |
what does the second stage of stress involve? | Entire neuroendocrine response (if successful recovery) |
what does the third stage of stress involve? | Progressive breakdown of compensatory responses |
when does a stress response occur? | when demands greater than person’s ability to cope |
what does Endogenous mean? | inside body |
what does Exogenous mean? | outside body, environmental |
what are the organs involved in the HPA axis? | hypothalamus, anterior pituitary, adrenal glands |
What are the hormones involved in the HPA axis? | Corticotropin releasing hormone (released by hypothalamus); ACTH (secreted by anterior pituitary); cortisol (secreted by adrenal gland) |
what is the inflammatory/immune shift? | Increase in cortisol/NE/Epi causes a DECREASE in Th1 cells while at the same time an INCREASE in Th2 cells |
what do Th1 cells do? | Promote cellular immunity to protect the body from intracellular antigens |
what do Th2 cells do? | Produce antibodies that protect the body from extracellular antigens |
What does Th1 secrete? | IL-2, IL-12, TNFa, INF-y |