biopsychology

Question 1

assumptions of flight or fight response

Answer 1

person experiences stressful situation
body reacts in specific ways e.g HR increase, muscle tense
reactions collectively known as flight or fight response
bodily changes allow individual to either flee to safety or fight off the threat

Question 2

flight or figth response to stress

Answer 2

amyglada and hipocampus
person faced with threat, area of brain amyglada is mobalised
then sends stress signal to hypothalaumus
communicates with sympatchetic nervous system
bodys response to stress involves twow systems
SAM
HPA

Question 3

response to acute (sudden) stressors

Answer 3

SAM
sympathetic nervous system
when SNS is triggered, begins process of body for action to either fight or flight
SNS sends signal to adrenal medualla, repsonds by releasing hormone adrenaline into bloodstream

adrenaline
adrenaline circualtes round body causes number of pscyhyhological cahnges
heart beats faster
blood pressure increases
triggers release of blood sugar (glucose and fats into bloodstream supplying energy to areas of body associated with fight or flight

parasymptehtic nervous system
threat has passed, dampens down the stress response
branch slows the HR down
reduces blood pressure
digestion begins again

Question 4

response to chronic (ongoing) stressors

if brain continues to perceive something as threatening, second system kicks in

Answer 4

HPA
hypothalamus

pituitary gland

adrenal gland

Question 5

hypothalumus

Answer 5

response to continued threat, releases hormone CRH
released in bloodstream in response to stressor

Question 6

pituatory gland

Answer 6

CRH causes pituatory to produce and release ACTH
ACTH transporys in bloodstream to target site in adrenal glands

Question 7

adrenal gland

Answer 7

stimulates adrenal cortex to release several stress related hormones
cortisol
reponsible for several effects in body important for flight or fight
some positive
some negative

Question 8

A03 for flight or fight-weakness

Answer 8

does not tell the whole story

grey argues that first phase of reaction to threat is not to fight or flee
but to avoid confrontation
most animals display ‘freeze’ response
inital freeze repsonse is stop look and listen
freeze focuses attention and makes them look for new info in order to make best repsonse to particualr threat

Question 9

localistion

Answer 9

our physical and psychological abilities all come from specific brain areas
before discovery, holsitic approach was assumed coreect what assumed whole brain is involved in all brain processes

Question 10

hemispheres of brain

Answer 10

brain seperated into two halves (hemispheres)

each hemisphere dominant for different abilitie-lacterilisation

left hemisphere domincant for language proccesing

right hemsiphere domiannt for spatial processing

also contralateral-left hemsiphere controls right side of body

outer layer around hemispheres called cereburll cortex-consists of grey matter which splits animals and us intellectually

Question 11

lobes of the brain

Answer 11

Frontal lobe-back of lobe is motor area,
where brain processes body movement
Pariental-front of lobe is somatosensory area
where brain processes touch
Occupital-contains visual area
where brain processes sight
Temporal-contains auditory area
brain processes what you hear
flower pot