the bodies response to stress 2 Flashcards
what is the definition of hormones?
any substance produce’s by a gland or organ of the body and circulated into the blood
what is the pituitary-adrenal system
a stress response system involving the hypothalamus, pituitary gland and adrenal cortex, which help the body deal with chronic stressors
what is the sympathomedullary pathway
the influence of the sns and adrenal medulla prepares the body for a fight or flight when faced with an acute stressor
what is the role of the hypothalamus
when stressors are perceived by the higher centers of the brain a message passes to a small cone shaped pat of the brain called the hypothalamus. the hypothalamus is the control system for most of the body’s hormonal systems including those involved in the stress response activation of a particular region of the hypothalamus the para ventricular nucleus (pvn_ leads to the production of a chemical messenger, anthropomorphic-releasing factor which is released into the surrounding blood stream in response to the stressor
what is the pituitary gland
the pituitary gland produces and releases an adrenocorticotrophic hormone
what is the adrenal cortex
it releases cortisol. this raises blood pressure ,pain threshold, energy (quick burst), lowers cognitive performasnce and immune response. (the adrenal cortex increases in size if the stress is prolonged.
