Stress

Stress

Physiological response to aversive or threatening stimuli

Hypothalamus pituatary adrenal axis

Regulates homonal component for stresss

Cortisol

Stress hormone, released by HPA

Direction of info and steps

1. Regions in the brain detects threats, and sends info to hypothalamus 

2. Causes Neurosecretory cells to release corticotropin releasing factor (CRF)

3. CRf travels to the pituitary gland where it causes the release of adrenocorticotropic hormone ACTH

Sympathetic Nervous Syste

Activation of this inhibipts parasympathetic nervous sytem

Releases epinephrine

Epiniphrine 

Adrenaline 

Acute stress

An emergency

Chronic Stress

Long term

Yokes

Show the effect of chronic stress and show learned helplessness

Masters

Show that controls reduce stress response

Medial Prefrotral cortex

Inhibits stress response