Peanuts enters the mouth
The peanut enters the throat
Peanut travels down the esophagus
Mast cells attack the foreign food and releases histamines
The airway contracts making breathing
The blood vessels dilate and start to leak so blood pressure lowers
The heart beats irregularly
The epi-pen pierces into the muscle thigh
Alpha and beta receptors bind together using the epinephrine from the epi pen
It causes the blood vessels to narrow which increases blood pressure
The airway opens to ease breathing
In turn the heart becomes more regular
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