Epinal

Adrenaline, also known as epinephrine, is a hormone and medication[7][8] which is involved in regulating visceral functions (e.g., respiration).[7][9] Adrenaline is normally produced both by the adrenal glands and by a small number of neurons in the medulla oblongata. It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart by acting on the SA node,[10] pu... [wikipedia]