When you perceive a stressor your body prepares for danger. It sets off a series of reactions called the fight or flight response. these reaction include increased heart rate, blood pressure, rate of breathing, sweating, and muscle tension.
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\*be familiar with all the stuff in the picture
__**The Fight or Flight Response**__
Pupils dilate
Hearing becomes more acute, (hear every little sound)
Endorphins released to block pain in case of injury
Decrease saliva and mucus in mouth, digestion low priority (dry mouth)
Bronchi dilate to let more air flow into lungs
Perspiration increases to prevent overheating (sweaty palms)
Liver breaks glycogen down into glucose for immediate energy
Digestion halt (indigestion, butterflies, nausea)
Bladder relaxes to decrease body weight, make easier to flee (wet pants)
Blood vessels dilate to increase blood flow to muscles and brain
Blood vessels constrict to reduce blood flow to low priority organs, e.g., digestive system
Heart rate and blood pressure increase to get more nutrients through body
Adrenal glands increase epinephrine and norepinephrine which increase HR, BP, glucose
Muscle contract (contributes to muscle tension)