Fight or flight Flashcards
Heart rate change
Increased heart rate- Pumps more oxygenated blood around the body and to the muscles.
Pupil dilation change
Pupil dilation- Allows a greater visual field meaning you can see more clearly.
Sweat production change
Sweat production- Gets the cooling system in gear for when you get hot.
Breathing rate change
Increased breathing rate- gets more oxygen in the blood.
Non essential processes change
Reduction of non-essential functions- saves energy to be used in the muscles.
Order of fight or flight
A person enters a stressful situation.
The amygdala in the limbic system is activated sending a distress signal to the hypothalamus
This activates the sympathomedullary pathway
This alerts the sympathetic nervous system
This stimulates the adrenal medulla
This secretes adrenalin and noradrenaline into the bloodstream.
Causes physiological changes for fight or flight.
Chooses whether to fight or run.
Parasympathetic nervous system takes over
