ANATOMY

Detailed explanation-1: -Adrenaline makes your heart beat faster and your lungs breathe more efficiently. It causes the blood vessels to send more blood to the brain and muscles, increases your blood pressure, makes your brain more alert, and raises sugar levels in the blood to give you energy. Your pupils grow larger and you sweat.

Detailed explanation-2: -The major physiologic triggers of adrenaline release center upon stresses, such as physical threat, excitement, noise, bright lights, and high or low ambient temperature. All of these stimuli are processed in the central nervous system.

Detailed explanation-3: -On receiving distress signals from amygdala, the hypothalamus signals the adrenal medulla through the autonomic system. The adrenal medulla releases epinephrine and norepinephrine (NE) into the bloodstream.