Adrenaline and noradrenaline are found in the adrenal gland and in neurons of the peripheral (autonomic) and central nervous systems. Synthesis of these catecholamines is tightly regulated and ensures that their supply is coupled to the rate of their release. Both adrenaline and noradrenaline help to maintain internal body state (homeostasis) but, in the brain, they are thought also to influence arousal and mood.
Keywords: dopamine--hydroxylase; adrenaline; noradrenaline; sympathetic nervous system; locus coeruleus








