The fight or flight response

• How does the brain detect a threat?

  Via the hypothalamus.
• What happens after the hypothalamus identifies a threat?

  Sympathetic division of ANS is triggered, fight or flight.
• What happens when adrenaline is released?

  ANS changes from parasympathetic rest state to aroused sympathetic state.
• Why does the fight or flight response happen?

  To get the body ready to confront a threat or give energy to run.
• What happens during the fight or flight response?

  Physiological changes due to action of adrenaline, e.g increased heart rate, decreased digestion.
• How quickly does the fight or flight response happen?

  Immediate and automatic?