the automatic nervous system controls movement of non skeletal muscles such as the heart
reactions are automatic and deal with vital organs
sympathetic branch
activated in situations that require energy (fight or flight)
parasympathetic
activated when the body is trying conserve energy and store resources
pituitary gland
the hypothalamus triggers the anterior pituitary to release ACTH as a response to stress
ACTH stimulates the adrenal glands to produce cortisol
adrenal cortex
produces cortisol in response to stress
if cortisol level is high the individual has poor immune function and an inability to deal with stress
adrenal medulla
releases adrenaline and noradrenaline hormones that prepare the body for fight or flight - increasing heart rate and blood flow to the muscles
stressor > detected by the hypothalalmus in the brain > sympathtic branch of the ANS sends out nerve impulses > stimulates the adrenal medulla to release adranalin and nonadrenaline > both these substances cause an increase in the activity of the sympathetic ANS (increase hr, bp)
when happens when the stressor has gone
the parasympathetic nervous system will activate to attemp to restore balance to the body , reduces the fight flight response, HR,BR,BP will reduce
