Flight or fight response and role of adrenaline.

• Flight or fight response


  is the bodies response of managing and helping us to cope with external stressors in the environment.

  -Useful in life-threatening situations.
• Role of adrenaline 


  Is to cause a series of physiological change in the body which will help the individual manage and cope with stressors.
• Sympathomedullary pathway 


  -Is responsible for activating the flight or fight response during acute stress. The nervous system stimulates the endocrine system to secrete adrenaline.

  -Stressful stimuli in need of urgent response is perceived by the amygdala.

  -Amygdala signals the hypothalamus, activates flight or fight response.

  -The hypothalamus activates the sympathetic NS which is a sub-division of autonomic NS.
• Sympathomedullary pathway 2 


  -Sympathetic nervous system stimulates the adrenal medulla which secretes adrenaline into the bloodstream and causes physiological changes where body helps use to manage stressors.

  -After, the body returns to a relaxed state and sympathetic is activated and body restarts digestion and dilation of pupils.
• A-amygdala

  H-hypothalamus

  A-autonomic

  N-nervous system

  S-sympathetic nervous system

  A-adrenal

  M-medulla

  P-para-sympathetic