ACUTE STRESS: The SAM system Flashcards
What does the SAM system stand for?
SympAthoMedullary
What is the role of the SAM system?
Controls the body’s immediate response to an acute stressor
What does ‘sympatho’ refer to in the context of the SAM system?
The sympathetic branch of the autonomic nervous system (ANS)
What does the sympathetic branch control?
The body’s automatic responses that we don’t have to think about
What triggers the sympathetic branch when a stressor is perceived?
The hypothalamus
What does ‘medullary’ refer to in the context of the SAM system?
The middle (medulla) of the adrenal glands
Where are the adrenal glands located?
Just above each kidney
What hormones are released by the adrenal medullas in response to stress?
Adrenaline and noradrenaline
What is the effect of adrenaline and noradrenaline on the body?
Stimulate target organs like the heart and divert blood to muscles
What happens to the body when the stressor stops?
The parasympathetic branch of the ANS takes over
What is the function of the parasympathetic branch of the ANS?
Returns the body to the rest and digest state
Fill in the blank: The SAM system is responsible for the body’s _______ response to an acute stressor.
immediate
