stress and immune responses Flashcards

1
Q

what is stress`

A

exposure to harm or threat

causes physiological changes hr/br

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2
Q

where does a stress response begin

A

nucleus of the hypothalamus

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3
Q

where is ATCH released from

A

pituitary gland

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4
Q

what does acth cause release of

A

glucocorticods from the adrenal cortex

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5
Q

which system to stressors activate

A

sympathetic nervous system

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6
Q

what is released from the sympathetic nervous system caused by stressors

A

adrenaline and nor adrenaline

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7
Q

where is adrenaline and nor adrenaline released from

A

adrenal medulla

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8
Q

what effect do stressors have on cytokines

A

stressors increase the production of cytokines

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9
Q

define psychoneuroimmunology

A

effect of the mind on health and drug resistance

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10
Q

what is the link betwee stress and gastric ulcers

A

higher levels of stress = more susceptible to gastric ulcers

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11
Q

what bacteria causes a gastric ulcer

A

H-pylori

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12
Q

what is a gastric ulcer

A

lesion on stomach lining

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13
Q

state the 2 lines of defense in the immune system

A
  1. innate immune system

2. adaptive immune system

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14
Q

what are cytokines

A

small proteins produced by immune cells

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15
Q

what is the function of cytokines

A

promote healing of damaged tissue

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16
Q

state the processes that occur in the innate immune system

A

pathogens cause swelling

cytokines are released whcih attract phagocytes and leukocytes

17
Q

what is the function of the adaptive immune system

A

destroys cells that have already been attacked by phagocytes

18
Q

what is a lymphocyte

A

specialised white blood cell in the lymphatic system

19
Q

what immunity does a T cell produce

A

cell mediated immunity

20
Q

describe the process of a t cell

A

bind to macrophage

t cell would multiply, created more t cells to destroy pathogen

21
Q

what immunity does a B cell produce

A

antibody mediated immunity

22
Q

describe the immunity process of a B cell

A

B cell bind with antigen
B cell replicate and release the specific antibody to the antigen
antibody kill micro-organism

23
Q

what is the advantage of the memory component of the adaptive immune system

A

allow vaccinations to have their preventative effect

provide immunisation

24
Q

define acute stress

A

good to fight infection

25
what do short term cytokines do
combat infection
26
define chronic stress
immune system becomes less effective
27
what do long term cytokines do
cause problems or long term health consequences
28
what are T and B cells receptors for
glucocorticods
29
what are lymphocytes receptors for
glucocorticods, adrenaline and nor adrenaline
30
which brain region has lots of glucocorticods receptors
hippocampus
31
what are the risks of a small hippocampus
increased risk of stress | increased risk of ptsd
32
what is the effect of stress mediated by
glucocorticoid levels
33
if a pup was raised by an anxious mother, what effect would this have on adulthood for the pup
anxious adult
34
what effect did meditation have on stress response
increased production of antibody in meditation group compared to control group led to increased immune response to vaccination
35
state two types of stress
acute and chronic stress
36
what is the function of the innate immune system
react quickly to pathogens | activated by toll like receptors
37
define phagocyte
ingestion of bacteria or other material