ANATOMY

Detailed explanation-1: -These glands respond by pumping the hormone epinephrine (also known as adrenaline) into the bloodstream. As epinephrine circulates through the body, it brings on a number of physiological changes.

Detailed explanation-2: -Adrenaline (epinephrine) is a hormone your adrenal glands make to help you prepare for stressful or dangerous situations. Adrenaline rush is the name for the quick release of adrenaline into your bloodstream. This gets your body ready for a “fight or flight” response.

Detailed explanation-3: -Adrenaline is released by the adrenal glands in the body. Hypothalamus sends the signal of releasing adrenaline whenever there is a situation of flight, fright, or fight. Adrenaline accelerates the rate of heart along with the flow of blood in the vessels and helps in tackling emergency situations.