Stress Response Flashcards
2 subparts or autonomic (somatic NS)
PNS
SNS
2 subparts or autonomic (somatic NS)
PNS
SNS
How to describe SNS
Get up and go
Fight or flight
Physiological responses of sns
Increased hr Increased bp Dilation of pupils and bronchioles Increased release of glucose and ffa Diverts blood away from digestive system to working muscles Increased sweating Increased respiratory rate Release of stress hormones
How to describe pns
Recovery response
Rest and digest
Physiological impacts of pns
Conserves energy Limited availability of stress hormone Aids sleep Improves digestion and absorption Lowers blood sugar and FFA
Where does the brain process incoming stimuli
Thalamus
Where do signals flow after thalamus
Cortex and amaygdala
How does amygdala react
Defensively as most stimuli are threatening
Role of cortex
Higher brain function
3 parts of prefrontal cortex
VmPFC
Orbitofrontal cortex
Dorsolateral PFC
What is the limbic system
Survival instincts
Ventral system role
Establishing threat and reward value of a stimulus
Hpa axis
Hypothalamus
Pituitary
Adrenals
Hpa response to stress
Hypo- CRT- corticotrophin releasing factor
Pituitary - ACTH- adrenocorticorophic hormone