7 stress

Question 1

elevated levels of stress

Answer 1

Sympathetic NS body uses lots of energy and doesnt use it on the immune system: more likely to get infections, viruses, etc. (covid related?)

Question 2

leukocytes

Answer 2

carried in the blood: detect bacteria and differ body’s and other cells, what doesn’t belong in the body, it attacks bacteria cells, antigens. Help from T and B cells

Question 3

b cells and t cells

Answer 3

B Cells: produce antibodies
T Cells: both directly attacking and creating more, first ones to arrive and B cells. Memorize bacteria genes so next time when it enters the body again, it responds more quickly.

Question 4

HPA axis

Question 5

cortisol

Answer 5

increases blood sugar + metabolism

Question 6

CRF containing neurons

Answer 6

contain CRF, corticotropin releasing factor.
Sympathetic NS part of autonomic NS - norepinephrine and neurotransmitter: quick response which increases immediate physiological arousal such as heart rate.

Question 7

locus coeruleus

Answer 7

hormone released bc of stress → adrenaline(epinephrine)
Increases arousal and stress response.
Adrenal medulla receives input from the NS - which releases norepinephrine

Question 8

Why is the zebra not as stressed as the monkey and why did it get stressed when it got to the zoo?

Answer 8

Controllability and predictability
On the wild: it is free
At the zoo: it can’t run away, stuck in the situation and it has adapted to ‘escaping’ “It can run away”
The chimpanzee(monkey): Lowest social group
Control predictability
No control so constant stress
Fear of left out of social group - being thrown out of groups means lack of social support which produces stress → social isolation is a stressors