Fight-Flight-Freeze Response

Question 1

Flight-Fight-Freeze Response

(2)

Answer 1

• involuntary reactions resulting in a state of physiological readiness to deal with an acute stressor
• considered an adaptive response because it increases chance of survival and reduces chances of harm

Question 2

Flight-or-Fight

Answer 2

• when threat is percieved, a signal is sent to the hypothalamus via the amygdala to respond by activating the sympathic nervous system to stimulate adrenal glands

Question 3

Freeze

Answer 3

• when the threat is so overwhelming that the parasympathetic nervous system activates and causes the body to freeze

Question 4

HPA Axis

hypothalamus - pituitary gland - adrenal glands (4)

Answer 4

• activated when a stressor is chronic, also involved the in GBA
  1. hypothalamus is activated releasing CRH
  2. CRH stimulates pituitary releasing ACTH
  3. ACTH travels through blood stream and stimulates adrenal glands

Question 5

Stress Hormones

Answer 5

short term
- adrenaline and noradrenaline (activate sympathetic nervous system)
long term
- cortisol

Question 6

Cortisol

Answer 6

• stress hormone that energises the body by increasing glucose and metabolism long term
• produced by the adrenal glands
• immunosupression function - decreases immune system, increases vulnerability to disease
• cortisol concentration in bloodstream used as an objective measure of stress