1 Tap water is a mixture of water and other particles. Pure water or H2O is generally referred to as distilled water.  Many of the substances we come into contact with every day are mixtures including the air we breathe which is a mixture of gases like oxygen and nitrogen.
Effect of epinephrine on glucose metabolism in humans: contribution of the liver. Abstract. Epinephrine causes a prompt increase in blood glucose concentration in the postabsorptive state. This effect is mediated by a transient increase in hepatic glucose production and an inhibition of glucose disposal by insulin-dependent tissues. Epinephrine augments hepatic glucose production by stimulating glycogenolysis and gluconeogenesis.
In addition to epinephrine, we see norepinephrine, which is a second hormone secreted by the adrenal medulla that increases heart rate, blood pressure, cardiac output and blood glucose levels. So we see that norepinephrine is very similar to epinephrine. One difference we see is that norepinephrine is not only a hormone secreted by the adrenal medulla, it is also a neurotransmitter found at nerve endings within the sympathetic nervous system.