The Census Bureau can also provide statisics and demographics cor the years 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 on their website.
dopamine. n. 1. (Biochemistry) a chemical found in the brain that acts as a neurotransmitter and is an intermediate compound in the synthesis of noradrenaline.oun. 1. dopamine-a monoamine neurotransmitter found in the brain and essential for the normal functioning of the central nervous system; as a drug (trade names Dopastat and Intropin) it is used to treat shock and hypotension.
Epinephrine is synthesized in the medulla of the adrenal gland in an enzymatic pathway that converts the amino acid tyrosine into a series of intermediates and, ultimately, epinephrine. Tyrosine is first oxidized to L-DOPA, which is subsequently decarboxylated to give dopamine.